BIAB Efficiency is way too low, need to adjust mill or double grind Most of the fermentation was performed at ~82F for 3 weeks
Based on boiling 6.00 gallonsliters at 1.037 for 60 minutes, this will decrease your wort by 1.00 gallonsliters, bringing your after boil OG to 1.043. You wanted an OG of 1.044. It looks like it will be under.