Make sure that they look after you properly. I went back into work after a long illness and I was supposed to have "support" with me. Twenty minutes after I started back, my "support" had to go to take a phone call. That was the last of my support!!! I had previously had a lovely room with an office attached but returned to a shared "cupboard" and didn't even have a place to store my stuff or hang up my coat! I took early retirement soon after. The twenty something year old that got my job started in September and left in October due to "work related stress"!
Take care and look after yourself. Hopefully we will all be able to get back to whatever normal used to be soon.