This is more of a general response/I went through a similar situation. Paisley went to puppy classes for 2 6 week sessions. By the middle of the second session, it was becoming clear that things were not working. She was reactive to so many things and I was overwhelmed. I switched trainers (she was approx 5 months at the time), had a new plan, and things slowly got better. Her reactive phase only lasted 4.5-7.5 months at most. My suggestion is, if you feel you are not making any progress, it may be time to look at a new trainer.
Good luck - I certainly know what you are going through and with the right trainer, your life will be a lot easier!
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Leyna vom Grunenfeld, HT, PT, HSAs, HRDs, RLFs
Paisley vom Kirschental, 3/25/13, aka "the devil"
Levi vom Grunenfeld, RIP 9/5/04 - 3/4/13