I need some advice on my partner and steroids

My partner is currently taking anabolic steroids and has been doing this on and off for the last 3 years. I have been reading up that by taking steroids can temperaily decrease the sperm count. I have spoken to him about this and he still wants to continue using them. I am worried that I may not fall pregnant because of this. I don't know how else I can talk to him about it because I really want to start trying for a baby but I don't think he will be willing to stop taking them long enough until I conceive. What do I do? I really need to get into his head that this could really effect us. We both want children together. Please help 😩😔😒