Order payment status check failing when waiting for payment status through a webhook – Woocommerce

I’m building a payment plugin. The way it works is on clicking the pay option on the checkout page, the user gets a link on their mobile phone where they can complete the payment which then triggers a webhook to the WooCommerce site and status gets updated as paid/failed according to the data received in the webhook.

The requirement is that the spinner that’s displayed after clicking the pay option stays on until the webhook data is received or is timed out after 2 minutes. Right now the webhook is doing it’s job, but the logic behind the spinner fails. Not sure what’s going wrong

This is the code which get’s triggered after the SMS with the link is sent to the user. The logic inside the do...while loop doesn’t work

WC()->cart->empty_cart();
$order->update_status('wc-pending', __('Awaiting payment.', 'txtdomain'));

$loop = 8;
$loopOrder = wc_get_order($order_id);
do {
    sleep(15);
    $loopOrder = wc_get_order($order_id);
    $loop--;
} while ($loopOrder->get_status() == "pending" && $loop >= 0);

if ($loopOrder->get_status() == "pending" || $loopOrder->get_status() == "failed") {
    $_SESSION["order_id"] = $order_id;
    $_SESSION["timeout"] = (time() + ($GLOBALS['retry_delay_in_minutes'] * 60));
    $error_message = 'Timed out. Please wait <span id="retry_timer">' . ($_SESSION["timeout"] - time()) . '</span> seconds before retrying';
    if($loopOrder->get_status() == "failed"){
        $error_message = 'Payment failed. Please wait <span id="retry_timer">' . ($_SESSION["timeout"] - time()) . '</span> seconds before retrying';
    }
    wc_add_notice($error_message, 'error');
    return array(
        'result' => 'failed',
    );
} else {
    return array(
        'result' => 'success',
        'redirect' => $order->get_checkout_order_received_url()
    );
}

and below is the code that’s triggered on receiving the webhook

$order = wc_get_order($request["OrderNumber"]);

if ($request["StatusID"] == 0) {
    $order->update_status('wc-failed');
} else {
    update_post_meta($request["OrderNumber"], 'invoiceid', $request["TransactionID"]);
    $shipping = false;
    foreach ($order->get_items() as $order_item) {
        $item = wc_get_product($order_item->get_product_id());
        if (!$item->is_virtual()) {
            $shipping = true;
        }
    }
    if ($shipping) {
        $order->update_status('wc-processing');
    } else {
        $order->update_status('wc-completed');
    }
}
return true;