Varicocele please help

Theodora • TTC # 1 IVF 🙏 Unexplained infertility/endometriosis

This is when a vein heats up the sperm and slows motility and can cause infertility. My fiancé doesn’t have it so badly but he has been given supplements from the doctor but I don’t see anywhere on the Internet that there’s an option other than surgery. Please help if anyone knows