The reason for low sperm is important. My friend was told he had no sperm and they struggled through ivf to conceive their first. He now has 5 other children all conceived naturally. Turned out his past drug use (steroids - he was a professional body builder) was to blame. So in this instance it most certainly can be reversed.

Aww babe I’m so sorry. That’s rough. I hope it doesn’t tear you guys apart. There are other ways. Have they said if there’s anything he can take or do to maybe make him fertile? Idk how he feels about it, but there’s always looking into a sperm donor. I feel so bad, I know that’s heartbreaking news. Hang in there love💕

I understand how you feel my husband doesn't has much sperm passing and we have been trying for almost 3 year and nothing at this point I am not doing much just waiting if something happens

Have you considered other options?