In addition we all stuck at home and can’t do much of anything. I am sorry it’s a rough day. Pandemics isn’t helping. Don’t worry about it being an anniversary. Take pressure of it. Just think of it as another day

I think you two just need to talk and see where you stand. Reduction of sexual activity could be stress or age related and that’s normal. If it’s related to problem in break in emotional intimacy then it’s something to look into. It might not be a big deal at all.