Has anyone requested wfh as reasonable adjustment for health condition?

[Littlemiss74]

Posted elsewhere too as not sure of best place. I have RA, managed with meds & can come & go, it’s unpredictable. When it flares it can be debilitating & affects me mentally as well as physically. Last year i had the best year ever & managed to reduce my meds. Recent flare up now under control but coincided with return to office 3 days a week. Last year mostly wfh and can’t help thinking this must have helped as no stress getting ready in mornings, no driving, more relaxed at home etc etc.

I find the mornings especially hard & working from home has been so much easier for me from a physical point of view. We are currently expected in the office 3 days a week - new hybrid working policy. I’m considering making a request for reasonable adjustments to work from home 2 days a week (i work 4 days).

I was just wondering if anyone else has done something similar & how you went about it - did you ask for this as a reasonable adjustment due to health condition or as a flexible working request which is a policy open to all?
My boss has always been very supportive & said to do what is best for me but I feel awkward keep saying can I work from home & worry it looks like I’m getting special treatment when everyone else is expected in 3 days. I’d rather have something more official agreed. I thought I could say I’d like to do standard 2 days from home but if I’m feeling fine & it would be beneficial to be in more some weeks I’m happy to do that.

Any advice would be appreciated.