First of all your working with auto’s on a 12/12 light schedule?you lose at least 6 hours of growth on your plants..auto do best on a 18/6 or 20/4 schedule
Check out my amnesia auto’s diary so you can compare growth,they are at beginnings of week 5 today
The yellowing is probably due to the overwatering,let her dry out a bit until the pot feels really light befor you water again..I would also skip nutrients because your pot is probably still full because the plant didn’t consume it due to the overwatering what causes the yellowing
✌️ Happy growing and stay safe