Hi Brenda
A couple or three observations for you:
From your other posts on FFS, for the things you're presently contemplating fixing you may not need much down-time. If your company permits remote working, this will be very useful. I was working from my hotel room during my convalescence 5 days after FFS. I'll concede I was not running at 100% efficiency, but the small rest breaks you may need are close enough to water cooler breaks, so you're getting similar efficiency overall and can justify it well enough.
It also is valuable to establish a relationship with a few senior people in HR at your company and to carefully think about how to manage your interactions with them. HR often have to apply judgment to absences, and it's vital to demonstrate a desire to minimise any absences. For every problem I bring to HR, I also proffer a solution, and generally mix my vacation allowance with an agreed formal sick leave period. For SRS I also offered HR that I take unpaid leave, and received the response of "Ooh, that's not necessary -we'll give you sick leave."
Finally, companies are often much more willing to be flexible if you time your absences well. My SRS will have me out of circulation during July and August, which are quiet times for my role in my industry.
Regards
A/J