I personally wouldn't bother messing with the pH of the soil at this point. If you have organics and microbial life the should balance the pH for you. As @Farmer's Hat said I would foliage spray and or give it some quick readily available. Nitrogen.
I have had similar issues in Roots Organic. I...
My guess would be a pH issue. I only pH balance hydro. I stopped doing pH for soil a few years ago. My water that comes out of the tap very close to 6.5 or 7ph. I let microbial life take care of balancing my soil.
I like @Budzbuddha suggestions. I like to add a tablespoon or so of rolled oats...
Chicken's been my go-to lately. The eggs have been pretty expensive so I get them from a farmer here down the road. I eat a lot of boneless, skinless thighs and breasts. Been able to get them around $2 a pound.
I'm sad about the cost of beef.lol I like the fact that there's more for me though. Lately I've been going down to the local butcher here in town. If I buy enough meat it averages out to about $5 a pound.:neutral: