I just looked at your threads and the reason you get no replies is because your questions are ntoo vague. It is impossible for someone to say what's the best fertilizer schedule and what works for one might not work for others. Your gonna have to experiment with different nutes for yourself and find what suits YOUR needs. Some people grow organically and want to make their own worm castings and others would rather use store bought castings or worm casting tea while others might use miracle grow so you can't really comment on your thread if you want to see what people use why not check out their grow journals?
With things like when should I flower and stuff well it's all personal preferance. You need to determine your plan before you start so you know what your doing. For me my plan was to grow 3 big plants so I topped them leaving like 10 branches so they would fill out. They were all sativas so I figured it would result in wide branchy plants but unfortunately for me most of them look like indicas and don't really look how I intendede but the sativa does and it's just how I wanted it I vegged for 6 weeks. Okay your plants are 3 feet tall, what is YOUR plan it's impossible for me to say yes it'sd time to flower but honestly i think you probably waited too long. Do you have clones or regular seeds everything will determine what's right for you. Technically yes your plants are said to be mature enough to flower when they have altewrnating nodes or they show preflowers and but maybe you want smaller plants or bigger plants so you can flower when you want.
Don't be so quick to say no1 gives advice although I know it sometimes is but people would rather not say anything than give bad advice and people's ?s need to be more indepth or they will not recieve good advice. Lights, nutes, mediums, temperature, ph, humidity.....everything needs to be noted and honestly if you can tell us all those specifics you could probably determine what's off just from that and answer your own ?.