It is difficult to "stand out" in anything until you gain experience and so, hard for someone in the early career. In a different field, Venus Williams turned tennis pro at age 14 and was an immediate success. But, she had an immense amount of experience as a junior. Something like 900 wins, IIRC.
As with most other things, one learns best by doing and you suggest that this is your math philosophy also, which is good. And most of us do poorly at the start, though we probably don't recognize that until later (as I did not, being too rigid initially).
There are books on teaching math at university level, though I've never used any such. Some turned up by an internet search are probably a good place to start.
I think the most important aspect of my own teaching philosophy (40+ years of experience) is that every student that wants to learn can succeed on their own terms. That doesn't mean full marks for everyone, as they need to put in the effort. But nothing in my teaching/grading regimen should stand in their way.
The next most important, IMO, is answering questions with minimal information to get students over a block rather than to give them an answer. But yes, provide channels to answer questions as they arise, even when not face to face.
If your students describe you as "tough, but fair" you are probably doing a good job ("probably", not necessarily).
And, I tried to learn to emulate those professors that I had that I thought did the best job in driving my own education. I've had a number of mentors along the way, one very important one was even in a different sub-field. I tried to emulate him and the others, though it took a long time to find my own way.
My best guess is that most of us learned to teach in just this way: trying to emulate our mentors and those whose guidance we valued.
This is all independent of health issues, which need to addressed differently, but specifically.
At a minimum, though, you need to assure coverage when you can't be there, for whatever reason. I once (over several years) was involved in a practice called "pair teaching" in which two of us covered the course and were always present for class sessions. One of us would take the lead at any given moment and the other would observe and comment as necessary. Perhaps you could explore that idea though it would require some variation and the assent of the university.