Yeah looks like she has some issues. She’s hungry so either not enough nutes in the soil or something is preventing her from taking in those nutrients like ph lockout. A ph meter and tds meter would come in handy to check the runoff at next watering and see what’s going on.
I just read your journal and the thing that stands out is not ph’ing your water, so I’d bet my paycheck that your ph is way off. I would do a complete reset of your soil and flush the plant with a few gallons of water ph’d to 6.5 (when you get a ph meter and ph up/down) then last half gallon of water I would give a 1/2 dose feeding with the FF grow big and full dose of the FF Big Bloom also ph’d to 6.5, no Tiger Bloom as that’s for flowering. Also see calcium and magnesium deficiencies so CalMag would be nice to add as well.
Don’t get hung up on calibration or water temps, focus on getting your plant back to good health - correct the ph, ph adjust all water/nutes that goes into your soil to 6.5 and you’ll never run into ph issues.
I would not worry about pruning or flowering at this point, get the plant healthy before doing any of that, want a healthy plant going into flowering.
I would also suggest reading my Gorilla Glue grow journal, it’s a long read but starts off as a tutorial in basic marijuana growing.