Hi Julie, nice PMPS! Whenever you shoot your lowest PS ever, we suggest you get a +1 and +2 to start out.
You don't need to hold off on feeding Punkin for that long, it is just better to not feed after mid-cycle (or nadir). Maybe you could split up his food into mini meals, and feed at PS, +2, +4, +6. Is he used to grazing?
FYI...I feed at PS, +2, +3, +4 and a snack at +6....unless numbers require more intervention. I have an autofeeder, that makes it much easier! I can't free feed, I have a piggie civie that would eat everything up in a flash (and then throw it up, of course!!)