Yes, I know, my pantry is a mess. It's just too deep and everything gets lost and I need to rummage around. I don't have time to reorganise every time with a clingy 1 year old :D.
So I'd like to make it less deep. Kind of like c shaped and add shelves at the top and bottom.

My question is, can I just cut the already assembled shelves without disassembling them and just use an iron on tape for the front bit that I sawed off. Is this possible? If yes, what tool do I use?