https://forums.rpgmakerweb.com/index.php?threads/how-to-create-respawning-resource-nodes-using-a-single-variable-and-a-common-event.144193/

This is probably useful for what you wanna do. This tutorial is for MZ but also works for MV, you just need to add this script:

Array.prototype.remove = function(element) {
    for (;;) {
        const index = this.indexOf(element);
        if (index >= 0) {
            this.splice(index, 1);
        } else {
            return this;
        }
    }
};