You also might want to make sure the string action is as low as possible.
I have a similar problem right now. This past summer I completely lost the use of my left hand for a few weeks due to some serious non-uke related nerve damage. I got my hand and hand strength back but it’s still sore and will be that way for a while yet. My doctor loves the idea of using the uke as physical therapy.
I just bought a tenor which I’m finding to be a bit more challenging than my soprano. But I love tenors.