It's hard to know when. In retrospect you always second guess yourself - "I waited too long" or "It was too soon". Breathe, and go with your instinct. You will know when it is right for your kitty. I hope that things calm down for you stress-wise. Sounds like we all have general anxiety...
I totally am feeling overwhelmed by my cats. I have taken in a(nother) stray recently and had his neuter surgery, vaccinations, etc. Adding him makes five cats total in my small home and it feels like a lot to me. I am constantly caring for them, cleaning, feeding, vetting. It's too much. I...