Need help please

Got this plant that is struggling .I had to transplant it because I had it in just mushroom compost and it was burning it.so went to just a cheap soil and a little compost mixed in and still it is struggling and getting worse .I don't have any extra cash to buy anything till payday I fed Alaska fish fert .that's it.my other plants are doing fine but this one isn't popping back up is there any thing I can do to help it out .9n 500 watts of mh on 18 and 6 on payday I am gonna try to swap it to a good soil if it's still alive but as it stands I do have to transplant it again and I lost a lot of root mass for sure but it was either try to transplant it or loose it thus is my second time growing. I only had 1 plant the first time now I have 3 I had to transplant 2 the other one is doing OK. It's just smaller and my big one is fine

To me, it looks like an over-watering plus zinc deficiency problem.

The "curved" drooping of the leaves indicates possible over water, and the yellowing like that on the top leaves may be deficiency of zinc.

Try to fix one thing at a time. I'd look at fixing the over water issue first, if that's what it really is. Hard to tell specifically by pictures, but looking at the dirt, you need more aeration (add perlite!).

Ok I plan to go on the 1st and get a good soil .I didn't read the bag till just now and it's a sand dirt mix and I have compost mixed in but watering shouldn't have been the issue unless I should stop completely for a few days I water about ever other day to every 3 days . Basically when the dirt is dry more then 2 inches down

But I also had a problem with humidity for about a week where it was over 70% and I could not get it down no matter what I did but I did manage to finally get it under control and I average between 40 and 55% now but they never fully recovered I think from the humidity issue