Ivf & drinking

We’ve just started our <a href="https://glowing.com/glow-fertility-program">ivf</a> cycle and I am really excited about it...The only issue I’m having is I’m trying to be healthy and not drinking too much but my husband isn’t mainly because it’s Christmas. Anyone else have the same issue? I keep mentioning it but he thinks there’s no problem with his sperm and tells me not to worry. Anyone else get this? Any advice?