Feeling nervous about varicocele surgery

Ze

After almost one year trying to conceive we found out that DH has low sperm count and morphology due to varicocele veins. Doctor said he should have the surgery and on April 14th he’s going to have varicocele surgery. Even if the doctor says it’s not a big surgery and he can be able to go home after operation, I’m sooo nervous. Also we have to drive 6 hours next day of operation. What can I do for him before and after operation? Anything special to make him more comfortable? And one last thing, how long did it take to semen to become normal values and conceive after surgery? Any comment is appreciated😊