Anyone else husband struggle with Low Testosterone?

Back story: My husband and I have been together for 4 years. Almost two years ago I got pregnant and it ended in a miscarriage at 11w5d. We learned that his Testosterone was very very low and his LH & FSH were just about non existent. At first the VA wouldn’t prescribe him any enhancers, so we have gone outside the VA. And he got on some Test & Mast from a bodybuilder buddy. Well finally we got in to a dr outside the VA at a Low T clinic and they started him on testosterone replacement, HCG & anti-estrogen pill & he stopped the “outsourced” stuff. I’ve been trying to get pregnant since the miscarriage in 2018. The Low T clinic has given us the option for him to take an anti-estrogen, something that starts with a “c” (can’t remember the name of it) at home & HCG shots at home, instead of his weekly testosterone replacement shot.

Has anyone had any luck with any of that with getting pregnant or heck just increasing your husbands/bfs sex drive?

I’m worried that the HCG & pills may not help increase his sex drive, since he won’t be getting a weekly testosterone therapy replacement shot.