Return to work anxiety

Hello! I'm new here, so a bit nervous to post. I'm 29 years old in Feb and got my official diagnosis of autism after a long wait in October of 2022.

Unfortunately I had to take some time from work due to autistic + type 1 diabetes burnout, as I work in a busy call centre and the constant customer service + office environment masking made me very unwell. I have had approximately 2 and a half weeks off now, and my sick note runs out today, so I am back in tomorrow. Although the time off to regulate myself and be authentic to my actual needs has been nice and much needed, I am now left with a constant overwhelming anxiety about having to go back to work.

I usually have a very strong work ethic, but for some reason I am absolutely dreading having to go back in to where the demand is high for masking again, to the point I can feel myself getting overwhelmed before I've even gone back in. I don't really know what to do or who to confide in as I keep getting told that it's normal to feel nervous about going back after time off. I'm scared that I'll push myself to go in and then breakdown and start uncontrollably crying again like I did before I took some sick leave. I know that there's nothing that can be done for me and all actions are my own, but perhaps I'm hoping for some advice or suggestions, or maybe even just a safe space to vent. I also acknowledge that not everyone is able to work so I'm sorry if this is a sensitive topic for anyone personally. Thank you.