4 weeks on blood thinners for me.
I did mine back to back for several reasons. One, they were both in terrible shape and just doing one wouldn't have gotten me much quality of life improvement. The other main reason is financial. I'm in the US and I've met my annual out of pocket maximum. By doing them both in the same calendar year I honestly saved a lot of money, since there was no question they both needed to be done.
In the short run, its exhausting and unpleasant. But in the long run, I will be very glad I got it over with.
Beloved and I refer to ourselves as "bandaid rippers". If it has to be done, just do it and get on with it.