I'm completely new to lifting

I want to start BJJ. I plan on going to a dojo two or tree times a week. I also enjoy going to the gym with my friend which I have been doing for 2 months now. Currently my work out routine is:

  • 3 times a week with 1 or 2 rest days in between (1 leg day, 1 arm and shoulder day and 1 core and back day)

  • 1.5 hours per workout with 5 minute cardio warm up

  • 3-4 sets of 10-15 reps of each exercise with moderate to heavy weights (so I'm guessing it would classify as strength training?)

Now my question is if and how I change my routine to accommodate for BJJ more. Feel free to ask any relevant questions about my current routine. Thanks in advance for any help!

EDIT: I confused reps and sets, I do 3-4 sets of 10-15 reps (depending on the exercise)!