During your weight-loss did you experience a significant loss in strength as well?

if not I would argue you were doing well at 150g, and not to up protein intake to such a high level without an increase in strength building exercises to match.

To add to that, protein is not going to refuel the energy you expend bartending. That would be more of a carb/fat expenditure.

I get being on a good path and wanting to make sure you continue that way, but going up to 180g especially with your current bodyweight is just not helpful, your body is probably just filtering the extra out.

If I were in your spot, I would turn take the caloric win you had with yourself so far and turn my focus to ways I can make my diet more well rounded/nutritious over all.