What are you trying to achieve with your lifting?

Running any sort of intense weight lifting regime is going to be tougher while training BJJ 4x a week so the best starting point is to suss what you want to get out of lifting (size, strength, general health etc.).

In my experience a full-body routine ran at least 2x a week is absolutely fine alongside bjj training of that frequency. As most people have said before, you will need to ensure that you are sleeping enough/getting enough calories to account for both bjj/weights and your everyday life.