My husbands analysis

My husband and I have been ttc and we got his analysis back a few weeks ago. All of his numbers look good except for his morphology which is 1. He’s cut back on caffeine and alcohol and completely stopped thc intake. Currently I am looking for a multivitamin that could help increase his morphology percent but there are a few other factors that worry me. Over the past few months, he has increased stress and anxiety, I’m sure this is contributing to the problem. He also has a very low sex drive, this is something that has been going on for a while. 1-2 a month typically. Could this be affecting morphology or at least our ability to get pregnant?

Any recommendations on men’s and women’s fertility multivitamins and any other advice on improving morphology would be so helpful and appreciated.

Thank you!