Retirement

did you not consider the option to continue before now.
what about negotiate to do fewer hours.
although so many people are being laid off every day, i think most employers will want to shrink the workforce, and if you have already agreed to finish in jan they are unlikely to re-consider.
what about looking for other roles, but again in this climate, realistically unlikely to be successful.
at least you are getting a works pension presumably.
many people over 50 made redundant have to struggle on relying on savings until pension at 66.

I love being retired. The first time I really took it in was one day stuck at the traffic lights I was agitating for them to change then I suddenly realised that I wasn't against the clock any more. There was no rush. I could take my time. It was a wonderful feeling.
I'm bored right now due to my two voluntary jobs and Aquafit and yoga classes being off but before lock down I was as busy as I wanted to be not as busy as I had to be.
Relax into retirement. I'll bet your knees will thank you for it!

Could you go part time to get yourself used to the idea?

Amy most people go through a shall I/shan't I period wondering when it's the right time to retire. And most people at the begging will regret retiring especially if they enjoyed their job and their colleagues'company. But you do get used to it, there's plenty to do and as they say you'll wonder how you ever had time to work! Good luck!