Feel like i should be moving up?

Ive been riding for a long time now, and i went awhile excercising peoples horses for them until i got my own horse again. My horse is a very strong smart 7 year old. hes about 15.1 hands. I started riding him in november and started jumping him in january, in those 2 month we did ground poles. He instantly was good at it! he loved every second of it, He never dodged out, or refused. We started doing little crossrails and i can now jump a little over 2 feet with him, and he is getting really good. I bought him in early march and my instructor has been helping me a lot, only one problem. She wont let me do ANYTHING with out her. she alwayss makes me wear a super thick heavy jumping vest which i cant move in, and i overheat really quick. She told me not even to do ground poles with out her, which i think is ridiculous. In lesson she doesnt teach me a lot, she just kinda watches me and gives a good job once in a while. I had a lesson with her recently, and it was embarrassing because everyone else was cantering the jumps like i normally do at 2 feet now (my horse caught on very quick and is very good with his strides.) and she knocked down the jumps to make ground poles and have me go over them (i felt like i was really screwing up or something which i was not) and i asked my teacher later why i didnt do the 2 foot jumps, or why i didnt canter the jumps, she said "im worried you might fall and get hurt, i dont want you to fall!" which i know she means she cares about me.... but theres an extent to that. With riding comes falls, and if im going to be doing grasshopper and 2 phases, i need practice. i know you should jump a horse more than 2 days a week, i only jump once or once evry 2 weeks, but beleive me, my horse is very inshape i ride him everyday for a while. My riding instructor got really annoyed at me when i set up a 6 inch "jump" (it was 3 inches off the ground if that) to practice on. i noticed her other student tends to say "its my horse i can do what i want" attitude, she can actually practice without being bugged. Im not saying im perfect, but jumping is somethng im really good at. It is my horse, and its my choice what to do with him, i think its unfair of her to do that to me.... I REALLY need to practice, but i cant afford lessons twice a week. i can afford them like once every 2 weeks maybe, even then kinda expensive. and also the weird thing is, my riding instructor isnt a greedy money person AT ALL. i mean she is a great person, and i love her but she gets a little ridiculous.... sorry for my super long novel