Not quite the same, but DH was away when I had flu when DS was 3 months old, it was savage AF. My tips:
If FF buy the ready made if you can afford it, just a few days worth but made all the difference. It was still an epic mission to clean and sterilise bottles, but I did it once a day and at least didn't have to make the milk up.
Playpen! In honesty the first day I felt so rough I put the playpen in my room, chucked some toys in and left him to it. I know that sounds bad, but we were in the same room, he was safe and occupied. It was hell getting up to feed, but I had bought the bottles up, the milk was fine out of the fridge as was the individual ones, and just fed him in my bed.
Stick hey mama baby sensory videos on YouTube, don't feel bad about putting the TV on if you need a break.
Easy meals for yourself, and any tidying etc can wait.
Keep nappy changed etc, but water and cotton wool wash is fine if he needs a wash rather than a bath just for a few days until you feel better.
If you need something dropping off that will make things easier, ask a friend who can leave it outside for you.