Wenchy, I'm confused as to what the question is. You want to know if you can have SF instant pudding or if you can have your mom's fluff?
If the question is about pudding, no you can't have it in P1. In P2, you can. Same deal with the pre-made SF pudding cups...no-no in P1, fine in P2. Try making some J-Ello, buying more, or having NSA popsicles or fudgesicles instead.