Sex w Covid positive husband?

I don’t know where else to ask this. My husband and I are going through IUI treatments, trying to get pregnant. We had to skip last month because he was out of town around ovulation and then he tested positive for COVID a few days ago so it was canceled for this month as well. We’re both vaccinated/boosted but have a three year old who is not since he’s too young. My husband basically has extremely mild cold symptoms and has been masking and isolating away from us at home, trying to avoid passing it on to us. Mostly because it will interfere so much more if we get it and have to continue staying home from daycare and work, but also because we obviously can’t predict how it might affect our son if he gets it, and we want him to be okay. I already took medication this cycle to stimulate ovulation in preparation for the IUI and I just got a positive ovulation test today. My question: do we risk having sex? I hate skipping another month of TTC (I’m 38 with diminished ovarian reserve, so every passing month is agonizing), but I also don’t want to be dumb and get Covid or give it to my son after we’ve been so careful. We would both mask and make it super quick, but is it worth the risk? I know it’s not known to be sexually transmitted but I worry about the close contact even if it’s super quick. Anyone else had to make a similar decision? I feel weird even asking.