All my sims packs are on my BFs account

Before I had my Xbox I would play on my boyfriend’s account. I have all of my packs on there. I recently bought myself an Xbox, but I can’t play on my own account. I’m wondering if there is a way to switch them over to my account. He is an ADVID Xbox player so it’s annoying to have wait for him to get off to play. Wondering if anyone knows anything?