Filter select option pada modal ubah data

Selamat malam para expert. mohon maaf saya ada kesulitan saat akan mengubah data pada dynamic select option.berikut kira2 kodenya.

modal ubah data:

<div class="modal fade" id="modalubahBumdes" data-bs-backdrop="static" data-bs-keyboard="false" tabindex="-1" aria-labelledby="modalubahBumdesLabel" aria-hidden="true">
        <div class="modal-dialog">
            <div class="modal-content">
                <form action="" method="post">
                    <div class="modal-header bg-warning">
                        <h5 class="modal-title" id="modalubahBumdesLabelHeader">Ubah Data BUM Desa</h5>
                        <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
                    </div>
                    <div class="modal-body">
                        <div class="mb-3">
                            <label for="ubahidBumdes" class="form-label fw-bold" hidden>ID Bumdes</label>
                            <input type="number" class="form-control form-control-sm" id="ubahidBumdes" name="ubahidBumdes" aria-describedby="ubahidBumdes" hidden>
                        </div>
                        <div class="mb-3">
                            <label for="ubahnamaBumdes" class="form-label fw-bold">Nama Bumdes</label>
                            <input type="text" class="form-control form-control-sm" id="ubahnamaBumdes" name="ubahnamaBumdes" aria-describedby="ubahnamaBumdes" required>
                        </div>
                        <div class="mb-3">
                            <label for="ubahalamatBumdes" class="form-label fw-bold">Alamat Bumdes</label>
                            <textarea class="form-control form-control-sm" name="ubahalamatBumdes" id="ubahalamatBumdes" rows="3"></textarea>
                        </div>
                        <div class="mb-3">
                            <label for="ubahidKecamatan" class="form-label fw-bold">Kecamatan</label>
                            <select id="ubahidKecamatan" name="ubahidKecamatan" class="form-select form-select-sm" aria-label="Default select example">
                                <?php
                                $pilihKecamatan = mysqli_query($koneksi, "SELECT * FROM kecamatan ORDER BY namaKecamatan ASC");
                                while ($row = mysqli_fetch_array($pilihKecamatan)) {
                                ?>
                                    <option value="<?php echo $row['idKecamatan'] ?>"><?php echo $row['namaKecamatan'] ?></option>
                                <?php
                                };
                                ?>
                            </select>
                        </div>
                        <div class="mb-3">
                            <label for="ubahidDesa" class="form-label fw-bold">Desa</label>
                            <select id="ubahidDesa" name="ubahidDesa" class="form-select form-select-sm" aria-label="Default select example">
                                <?php
                                $query = mysqli_query($koneksi, "SELECT * FROM desa ORDER BY namaDesa ASC");
                                while ($hasil = mysqli_fetch_array($query)) {
                                ?>
                                    <option value="<?php echo $hasil['idDesa']; ?>"><?php echo $hasil['namaDesa']; ?></option>
                                <?php
                                };
                                ?>
                            </select>
                        </div>
                        <div class="mb-3">
                            <label for="ubahunitUsaha" class="form-label fw-bold">Unit Usaha</label>
                            <input type="text" class="form-control form-control-sm" id="ubahunitUsaha" name="ubahunitUsaha" aria-describedby="ubahunitUsaha" required>
                        </div>
                        <div class="mb-3">
                            <label for="ubahnoPerdes" class="form-label fw-bold">Nomor Perdes</label>
                            <input type="text" class="form-control form-control-sm" id="ubahnoPerdes" name="ubahnoPerdes" aria-describedby="ubahnoPerdes" required>
                        </div>
                        <div class="mb-3">
                            <label for="ubahtglPerdes" class="form-label fw-bold">Tanggal Perdes</label>
                            <input type="date" class="form-control form-control-sm" id="ubahtglPerdes" name="ubahtglPerdes" aria-describedby="ubahtglPerdes" required>
                        </div>
                        <div class="mb-3">
                            <label for="ubahnoSk" class="form-label fw-bold">Nomor SK BUM Desa</label>
                            <input type="text" class="form-control form-control-sm" id="ubahnoSk" name="ubahnoSk" aria-describedby="ubahnoSk" required>
                        </div>
                        <div class="mb-3">
                            <label for="ubahtglSk" class="form-label fw-bold">Tanggal SK BUM Desa</label>
                            <input type="date" class="form-control form-control-sm" id="ubahtglSk" name="ubahtglSk" aria-describedby="ubahtglSk" required>
                        </div>
                        <div class="mb-3">
                            <label for="ubahadArt" class="form-label fw-bold">AD/ART</label>
                            <select id="ubahadArt" name="ubahadArt" class="form-select form-select-sm" aria-label="ubahadArt">
                                <option value="" disable selected>-- Pilih AD/ART --</option>
                                <option value="Ada">Ada</option>
                                <option value="Tidak">Tidak</option>
                            </select>
                        </div>
                        <div class="mb-3">
                            <label for="ubahstatusBumdes" class="form-label fw-bold">Status BUM Desa</label>
                            <select id="ubahstatusBumdes" name="ubahstatusBumdes" class="form-select form-select-sm" aria-label="ubahstatusBumdes">
                                <option value="Aktif">Aktif</option>
                                <option value="Tidak Aktif">Tidak Aktif</option>
                            </select>
                        </div>
                        <div class="mb-3">
                            <label for="ubahnamaKades" class="form-label fw-bold">Nama Kepala Desa</label>
                            <input type="text" class="form-control form-control-sm" id="ubahnamaKades" name="ubahnamaKades" aria-describedby="ubahnamaKades" required>
                        </div>
                        <div class="mb-3">
                            <label for="ubahjumlahPengurus" class="form-label fw-bold">Jumlah Pengurus</label>
                            <input type="number" class="form-control form-control-sm" id="ubahjumlahPengurus" name="ubahjumlahPengurus" aria-describedby="ubahjumlahPengurus" required>
                        </div>
                    </div>
                    <div class="modal-footer">
                        <button type="submit" type="button" class="btn btn-primary btn-success btn-sm" id="updateBumdes" name="updateBumdes">Simpan</button>
                        <button type="button" class="btn btn-secondary btn-danger btn-sm" data-bs-dismiss="modal">Close</button>
                    </div>
                </form>
            </div>
        </div>
    </div>

script ambil data saat tombol ubah data di click dan modal ubah muncul:

function getDetailBumdes(ubahid) {
            $('#ubahidBumdes').val(ubahid);
            $.ajax({
                url: 'bumdes/ubah.php',
                type: 'post',
                data: {
                    ubahid: ubahid
                },
                success: function(data, status) {
                    var a = JSON.parse(data);
                    $('#ubahnamaBumdes').val(a.namaBumdes);
                    $('#ubahalamatBumdes').val(a.alamatBumdes);
                    $('#ubahidKecamatan').val(a.idKecamatan);
                    $('#ubahidDesa').val(a.idDesa);
                    $('#ubahunitUsaha').val(a.unitUsaha);
                    $('#ubahnoPerdes').val(a.noPerdes);
                    $('#ubahtglPerdes').val(a.tglPerdes);
                    $('#ubahnoSk').val(a.noSk);
                    $('#ubahtglSk').val(a.tglSk);
                    $('#ubahadArt').val(a.adArt);
                    $('#ubahstatusBumdes').val(a.statusBumdes);
                    $('#ubahnamaKades').val(a.namaKades);
                    $('#ubahjumlahPengurus').val(a.jumlahPengurus);
                },
            });
            $('#modalubahBumdes').modal('show');
        };

bumdes/ubah.php:

<?php
    include("../koneksi.php");

    if(isset($_POST['ubahid'])){
        $idBumdes = $_POST['ubahid'];

        $query=mysqli_query($koneksi, "SELECT * FROM bumdes WHERE idBumdes = '$idBumdes'");
        $response=array();
        while($hasil=mysqli_fetch_assoc($query)){
            $response = $hasil;
        }
        echo json_encode($response);
    }

?>

pada saat modal ubah muncul,data yg muncul di modal ubah sudah sesuai dengan database.hanya saja pada bagian form control #ubahidDesa, saat di klik/mau di ubah,data idDesa muncul semua,tidak terfilter berdasarkan idKecamatan.bagaimana caranya hanya memunculkan idDesa yang idKecamatannya sesuai dengan form control #ubahidKecamatan?

mohon bantuannya.