I didn't go through the whole post, but X is right. If you don't eat enough fat you will not go into ketosis. You will stay in gluconeogenesis, which means you'll be breaking down muscle tissue. You need to choose if you want to be in ketosis or not and adjust your diet from there.
As I've said before you need to listen to your coach, which you said previously you had, and don't deviate. I think that you're asking too many people. This isn't a flame bro, just my opinion. Settle on a plan for the rest of the time and stick with it. That's the only way you'll know if it works or not.
Your metabolism has slowed down and that's why you stopped progressing. You need to add T3 to start it up again, as taking a break from the diet at this point is impossible. I think that you started off not eating enough cals, so your metabolism crashed quickly.
Again, meet up with your coach and discuss what's happening. Good luck.