You can just try 1.5g/lb and see how you do digestion wise
For me good sign to increase protein was when I didn’t need more carbs and fats given the current body composition toward the goal at the time, but yet I needed extra aid in recovery so I increased protein. Also when I needed to push past my current lean body mass eating for the size I wanted to be vs the size I was
Ok sounds good, what’s a good sign or how would I know if digestion good is it just based on how your feeling after meals?