What is your water source? I tried doing dechlorinated tap water and not adjusting pH and it just didn’t work for me. Once I got a water filter to remove all the bleach and fluoride I was able to not adjust my pH. I had a little bit of twisted growth on the first set true leafs, but once the microbes established themselves everything has been smooth sailing.
the same thing that’s happening to you happened to my grow. Finish it off, learn, and the next will be better. I suspect since you were overwatering so much before that you might have a dry spot in your pot now. Poke the sides around, if you feel stuff shifting, it’s dry. That’s just based on my experience though.