How to disable delivery on certain date at checkout page in WooCommerce?

I am using WooCommerce for my eCommerce website, I have added a custom checkout field “Delivery Date Picker” with the help of the official WooCommerce plugin “Checkout Field Editor” in my shipping field. Plugin Link: https://woocommerce.com/products/woocommerce-checkout-field-editor/ My Website: https://www.millionroses.com.au/ Checkout Field Date Picker Frontend Demo Checkout Field Date Picker Backend Demo There is no option…

Details