Mc walker settings

I am a non-op ATR dude at week 4 1/2.
Cast 2 weeks now on crutches in my Don joy mc walker boot.
I wanted to know what degree settings some used. I was at 30 degrees plantar for 2 weeks and now at 22.5 for 2 weeks. Doc ( jerk hates atr non-op) said every 2 [...]