How much does your man drink when TTC?

Sam • 🇬🇧 UK Full Time Mum, 2YO girl, pregnant with 2nd
My DH drinks about 24 units a week I'd say,  over Thursday to Sunday.
We had a miscarriage in December and are TTC again.
I'm just wondering if this is too much?
Will it affect our chances?
I don't really drink at all.