Hey man you seem to have a lot of plants in a small space. I'd say continue with what you are doing but after you harvest change a few things up; especially considering you are going to learn a ton of valuable info from growing these ladies out!
Here is how I would suggest you set up your next grow:
4 plants, start them in 1 gallon containers and then move them to 3-5 gallon containers (as big as you can fit really) after they have really established themselves in the 1 gallons. More soil = you don't need to be as responsible for feeding them.
Keep it 100% organic, only because it is easier for learning imo (Big bloom is organic, one of the only fox farm bottle products that is, but foliage pro is not but it is still a good product). With organics your microbes do the work as opposed to the amount of hydrogen in your grow media: Important part being i've never PH'd my organic soil and i've had increasingly great results. Organics with big pots is very easy for learning. I REALLY like Roots Organic's bottled nutrients(and their soil), if you did 3-5 gallon pots i'd just get their Surge(Their fish/seaweed/+ product) and HP2 (one of their phosphorus bloom boosters).
^Using Fox Farm Big bloom, with RO Surge and HP2 would be a great/easy fertilizer regimen for auto flowers. Start in either Roots Organic original potting soil (camo bag) or Happy Frog, and transplant into either Roots Organic potting soil or Fox Farm Ocean Forest potting soil. First feed surge, weeks 2-7 bloom use surge/hp2/big bloom. HP2 once your flowers are in full bloom should add awesome size.
-Surge: RO's fish product, kelp, fish and other goodies. Gives nitrogen, phosphorous, molasses (to feed microbes), and more. Helps with plant health and sweeter final product
-HP2- 0-4-0 Use about 2 weeks after plants show flowers until about 2 weeks before harvest, its a gentle phosphorus bloom booster
-Fox Farm big bloom- I grow 100% organic and this is the only FF product I use; but I love it. Lots of micro nutrients and bacteria.
-Fox farm Happy Frog or Roots Organic original for starting; gentle potting soils that wont burn your plants while they are little
-Fox Farm Ocean forest or Roots Organic original for second/final 3-5 gallon container (4 plants in your 2x2). Either soil will have plenty of nutes to help your plants bloom healthy and well. Personally I would suggest Roots Organic because I've had FFOF burn every plant i've put in it; and i've seen the same in many of my customers at the hydro shop.
I'm not an organic hippy or anything I just think in soil its easier and more forgiving; i feel hydro should be kept on the synthetic side (i do both).
Roots organics from aurora innovations makes awesome and easy products to use; i definitely suggest taking advantage of that. Soil, bottled nutes, etc..
Keep your stuff how it is for this grow and trust your instincts (i'm assuming its your first). For your next run I think my advice will really help you out. Once again I genuinely suggest keeping soils 100% organic cuz I think its simply easier than working with synthetics in organics cuz then you need to start worrying about PH. I have a 100% organic tent and a synthetic hydro tent. Not saying organics is better, but in soil its just easier.
Fewer plants is easier to manage(imo, and in soil), for a 4 plant 2x2 in proper pot size, feel free to bend them down. I've never grown autos to be honest but i've done lots of research on them, go ahead and bend them down; any time you make the main branch lower than secondary branches it helps spread out the top dominance. Its hard to hurt cannabis plants they are pretty hearty (Not to say you can't hurt them so still be gentile).
Also for your next (and this run) look into compost teas; relatively cheap startup cost (Bucket, air stone/pump, compost, molasses, like $60-70 for all and it will last you a long time) for big results (adding massive amounts of beneficial microbes to your soil).
Also... I have no affilitation with Aurora Innovations but I love their products.
I'm a little drunk atm, feel free to ask any questions about what I said and i'll get back to you broski
