So my question is basically if my main stem was accidentally supercropped in week 3 of flower do I just repeat this week's nutrient schedule and act like I'm just extending everything by a week (assuming the plant only needs a week to recover)?
I've used supercroping on sativas during the whole flower phase and it did not slow down the plants at all, nor affected yield (check my 2nd run ir you are curious). Don't repeat a schedule, feed the plant as needed, when you see deficiencies.