well you don't really need the bottom 2 for now if your learning. i don't foliar feed for specific reasons so i cannot give my 2cents on that type of use but generally you want to go with the general feeding.
if you give the exact nutrient your using i can give you a better idea. i see it is fox farm but they do have different products. this is the one i used
https://www.google.com/search?q=fox+farm+feeding+schedule&rlz=1C1ASUM_enUS693US693&tbm=isch&source=iu&ictx=1&fir=mABzyhOSPCnFcM%3A%2Cf3tbtApVPMITWM%2C_&vet=1&usg=AI4_-kSqYL2VYtggA0JfWWHEWMwJ5F9Stw&sa=X&ved=2ahUKEwjprajzwPngAhWvCTQIHQenDzIQ9QEwAXoECAQQBg#imgrc=zw8x8Wh57ot5DM:&vet=1
it is Teaspoons per gallon 3 teaspoons (tsp) = 1tbs ( tablespoon ) you need to read because they have different feeding schedules some state in tablespoons.
based on that chart i can tell you 100% DO NOT!!! follow that chart. 6 tsp is WAY TOO MUCH AND WILL CAUSE NITROGEN TOXICITY. i would start at 1/4th strength and work your way up if you see defiencies with no sign of nitrogen toxicity. 1/2 is already too much. in your case i would play it safe and go 1/2tsp - 1tsp and see what happens. 2-3tsp will likely cause issues eventually depending how much your feeding.
i strongly suggest you let use know exactly what your feeding like i said fox farm has different products we need the products name. if your feeding big bloom you can easily run 2-3tsp that is basically just like a compost tea pretty much.
if you want to see how feeding can affect your plants check out my current grow in my signature i feed a different line AN ( advanced nutrients ) but i fed 1/4th at first and feed every watering just as an experiment then it eventually got nitrogen issues so i dropped everything to 1/8th. then i eventually had to drop feeding from every watering to every other watering. it's just what im experimenting with others might have better advice on how to feed more properly but just my 2cents. trust me though it is extremely easy to over feed your plants. thus why i don't suggest anything over 1/4th. as you grow more then you basically just understand and make up your own feeding schedule and toy like what i am currently doing.
i only have experience with fox farm big bloom and grow big. the big bloom isn't too harsh on the plants but the grow big is as the big bloom NPK values are extremely low.