IME FFOF is a little hot sometimes for small plants. I planted directly to it from clone and had some stunting and nute-burn problem.

If I were you I'd go 1/2 LW and 1/2 FFOF when you pot up to 1 gallon. When you repot a couple weeks after that, you can use full-on FFOF.

You shouldn't need any nutes until about 3-4 weeks with FFOF. If you're using LW/FFOF then I'm not sure. You probably hit them with VERY weak grow nutes after 2 weeks or so. I wouldn't do more than 1/4 of the moderate dose at that time. I just gave nute-stress so some plants on their very first feeding (end of wk 1 of flower). They are the same clones that had trouble in FFOF. It was a super hot batch!! I used test strips to determine the nitrate in my runoff. It was off the charts, over 200 ppm, probably around 400! For reference, my healthiest plant has about a 20 ppm nitrate runoff (when fed!!).

So yeah FFOF can be highly variable. I think this excess nitrogen could cause me problems now that I'm flowering.