Like my little bro, he doesn't take criticism well LOL. It's like bro, I'm telling you these points so you can improve you f00l! (at him, not you!).
My coaching is it's my way or take the f0cking high way.
OP, find another coach mate. Do you even pay this dude for coaching?
Remember as a beginner it's not useful to say 3+ coaching points. You can't process and do this. 1-2 points TOPS so you work on the 1-2 issues, then once you got them down he can get on to the other points.
How have your lifts improved in the past 4months? 4months isn't all that much time mate if your training 1x a week. How often are you training? How many lifters is the coach training?