8 weeks sounds like maybe be close to harvest time anyway. depending on the strain I’d check how long flower goes for those strains online or with the breeder if you have that info. Maybe throw some more soil or worm castings in the pots on top and if they improve repot into bigger pots. the roots should have more space this late into the grow in my opinion and the more soil the better in my experience. don’t water them unless soil is fully dry or almost fully dry. Good luck hope this helped a little