Many TKRs have swelling for months, so it is very normal you have swelling at 5 weeks. When I went back to teaching mornings only my knee would swell from being active all morning. I often iced as I drove home and spent most afternoons icing and elevating. Here's what you can do at 5 weeks, but still elevating most of the day. When my swelling was BAD I elevated toes above nose by laying flat of the sofa with my legs on the sofa arm. I'd put an ice pack on my knee and lay there for an hour or so.
Weeks 4 and 5 - add to previous
Increase walks to out in the garden or street; to 20mins or longer if you feel up to it.
Additionally activity:
Gather a little bit of laundry, or put it in the machine OR take it out but not all of it
Now you can do a little dusting and tidying; do a little meal prep (for yourself not the entire family!)
Weeks 6 and onward - add to previous
Start taking car trips to the shops but keep them short and sweet at the start, no longer than 15-20 minutes
Take at least one 5 minute rest while you are out.
Activity: a very little ironing, washing, meal prep but get someone else to clear up after. Wash up but someone else clears the table, brings you the dirty dishes, dries and puts them away after, NOT you!!
Week 10 add to previous
Bed making and changing sheets, cleaning bedrooms etc., can wait now by which time, all things being well, you should pretty much start getting back to normal but don't rush it. If you do and you start getting pain and stiffness in your knee, that's a sign your knee doesn't appreciate what you're doing, that you're rushing ahead too fast. Slow down, right down, and start again. This stage might last until week 14 or even 16 but if it takes a even longer, don''t worry about it.