If you feed every watering, watch for salt buildup in the soil. Ph will be higher coming out than going in. I water every 3rd watering. Hard to remember what your substrate is without going back and searching for it. The more neutral (coco, peat, perlite), the more you need to feed as there are no nutrients in those blank substrates. If you have any kind of organic soil in there, it will hold nutrients so you can back off. That is why most recommend using nutes at half strength. I continue veg nutes pretty much into 3rd week of flower then start moving to bloom. If you use synthetics, remember to leave 2 weeks at the end of nothing but plain water to flush them. Organics - you can feed till you chop.
Defoliation...they sure are thick and you have a heavy canopy. That makes for higher Rh under the canopy and that can lead to mold. Be careful....You are at a great point to lollipop...basically clean off all the fans under the 3rd node...all.
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These are 1 gal cloth...peat, perlite, some compost from the yard, some living soil...it is a GDP/GG4. Not shown is my AG (my favorite strain since the 60's) and GDP (the density on GDP is enough to make me careful of mold).
PS - I'm watching