First Grow - Blue Gelato 41

It's been a rough 10 days in the garden if I'm honest. Problems with all the ladies but nothing that can't be fixed. We were plagued with really cold weather and high winds and it's shocked them pretty bad. Got the heater in the tent to hopefully resolve that issue. She also doesn't seem to take water as well as the others and is generally sensitive to everything. She looks over watered? I've abandoned any additional nutes for now as all the ladies came out with some minor burn and what I think was nitrogen toxicity. The Bio Bizz all mix must be supper potent because I gave 1 feed at half dose and the plants definitely have suffered since. Things look to be on the up now.... Hopefully. Would appreciate some input into the possible over watering issue? Her growth definitely seems stunted. Growing in a 46l fabric smart pot, with bio bizz all mix. Finding it difficult to diagnose the issue. The lower leaves seems clawed? UPDATE She seems on the mend now. Looking a lot better!