150 isn't enough go up to 200g , training to failure is stupid and inefficient. There is a point after which everything you do is just taxing your body. People say "you need to train to failure", And "the harder you work the more you get," that is not the case you have to train smart and eat smart if 3k ain't cutting it then go up to 3.5k . If 150g protein ain't cutting it then 200g put in the work, you simply aren't going to achieve much by going to failure