Just trying to figure out what's going on here..

First plant is doing 10x better than it was. I know I was overwatering so I let her dry out and I watered day before yesterday. They're in FFOF and FFHF mix with a little perlite. Temp is 73 and humidity is 52% haven't started any nutes yet just because I thought it was nute lockout from the overwatering. They're about 6-7 weeks old. Not sure the strain. Guy that gave me the seeds said they were Skywalker OG. First time grow so new to it all. I know for the little guy in the middle to not go overboard woth the watering or nutes tho. 2nd plant i transplanted about a week ago hoping it would help but he's just slowly getting worse. Any tips or help appreciated