it’s so cute and I actually also do diamond art painting but sometimes the actual painting sometimes the stickiness of it comes off so I recommend you so it won’t let come off. You should like mix sections so you can like do those so it won’t like stop being sticky so it can place the art more.
I would never peel the whole thing off just in case you don’t finish it at that moment and something else comes up because then it can dry out the glue