Thyroid surgery

I think it would be impossible to guess given the current circumstances. Even without Covid, the waiting time can be very variable. A lot depends on how big, whether there's a suggestion of spread, which hospital and how busy it is, whether the surgeon just booked 2 weeks golfing on the Algarve and a whole ton of other stuff. 

Also, a lot of us have surgery PRE-diagnosis (especially for follicular TC).

I don't think we can really put your mind at ease - but I would suggest you ask the doctors again and again, let them know if you are available in the event of a cancellation, and get your pre-med checks done so you're good to go.

Sorry about that, but they won't delay you unnecessarily.