NYP Hide Input until custom is selected

functions.php

function wc_nyp_relocate_suggested_amounts() {
	if ( class_exists( 'WC_NYP_Suggested_Amounts' ) ) {
		remove_action( 'wc_nyp_after_price_input', array( 'WC_NYP_Suggested_Amounts', 'display_amounts' ), 5, 2 );
		add_action( 'wc_nyp_after_price_label', array( 'WC_NYP_Suggested_Amounts', 'display_amounts' ), 5, 2 );
	}
}
add_action( 'wc_nyp_before_price_input', 'wc_nyp_relocate_suggested_amounts', 1 );

function wc_nyp_js_for_suggested_amounts() {
	wp_add_inline_script(
				'wc-nyp-suggested-amounts',
				'
				jQuery( ".nyp" ).on(
						"change",
						".suggested-amounts input:radio",
						function (e) {
							if ( "custom" === e.target.value ) {
							   jQuery(e.delegateTarget).find( ".nyp-input" ).slideDown().trigger("focus"); 
							} else {
								jQuery(e.delegateTarget).find( ".nyp-input" ).slideUp(); 
							}
				});
				'
			);
	
	wp_add_inline_style( 'wc-nyp-suggested-amounts-frontend', '
		.nyp .suggested-amounts .suggested-amounts__amount label { float: none !important; }
		.product .nyp .nyp-input { display: none; }	
	' );
}
add_action( 'wp_enqueue_scripts', 'wc_nyp_js_for_suggested_amounts', 99 );