Partner with a low sex drive. Advice please

Hi everyone, I'm in need of advice.

DH has been diagnosed with low testosterone and high prolactin. One of the side effects is that he has a VERY low sex drive, while mine is normal to high.

We love each other very much and are otherwise fulfilled in the relationship. We've been together for 12 years and are good at keeping things fresh. The last few years we've noticed his drive was changing. We've been ttc for over 2 years (I have pcos and he has low / high prolactin) and our dr put him on a low dose of clomid and a ton of vitamins. We have a follow up appointment in 2 months, but we both feel like it has gotten worse.

I love him dearly and we cuddle and kiss but if I try for anything more he stops it. He says he is attracted to me but feels no sexual desire. He said he doesn't even masterbate any more. I feel hurt being turned down all the time and he feels guilty turning me down.

I just feel like our marriage is turning into a platonic friendship.

Have you and your partner experienced this? What have you done to resolve it?

What have your doctors prescribed?