If you're a late novice/early int, you're not competing in powerlifting - you're participating. So no advanced periodization, taper, and peaking schemes. Novice - just skip Friday's workout, make what was supposed to be your set of 5 your opener, and go up from there based on how it's going that day. For early intermediates some say the same thing.
I personally have early intermediates adjust a little bit for about 1 week prior: hit some singles the Friday or Saturday before, 7-8 days out, instead of the normal intensity or end of week training day. Then Monday of the meet, work up to your opener and do a back-off triple and 5 with about 15-20% less than you could do those sets at, based on your recent training data. Mid-week day is very light and easy, like 2-3 triples at 60-65%, and then end of week training day is replaced by the meet.
IOW - you don't do a "powerlifting prep" program as a novice or early intermediate. You run the LP, or your HLM, and make those small adjustments the week of/before the meet, and then resume training.
After the early intermediate phase, there's more to discuss.