I can imagine that trying to make today about your anniversary to be immensely tough. I see what Wayfarer is saying about 2.0
what about instead of focusing on today being your anniversary in a traditional sense, you instead think of today as just being a really good/fun/focused day with H. No pressure on the traditions or what an anniversary *should* be. Maybe don't worry about the fancy usual things - dinner, back rubs, reminiscing, music.
What can be new? Don't worry about it being a tradition. Just something a little extra in which you attempt to turn towards one another.
Have any jokes you've heard lately you can just walk in and deliver? Even better if they're the kind that make you laugh when telling them - two people laughing is a bonding moment.
Any silly videos you think he'd like on the internet? Go up and show him and say "oh, thought of you and how silly this is".
Be ridiculous. Make a fort out of blankets and pillows and bring a bottle of wine and invite him in to hang out with you for a while. Tell him the pandemic and anniversary had you feeling like a little levity would be nice.
I guess my suggestion is this: Try to find a little way to let him in. Be the initiator in this. But don't worry about the "should" dos of the day. I think he would appreciate the invitation.
