I"m 52 and hit my FI numbers earlier this year, but it's kind of hard to know what FI is anymore because I'm not settled in any part of the country and home costs change drastically depending on location. Certainly not FI on the West coast after buying a home, something I'm planning to do.
So anyways my boss recommended doing a FMLA (family medical leave act), where you can leave work for 12 weeks and then return to your same job if you want. They are easy to get approved for, if you live in the USA, but someone in your family has to have health issues.
So I'm one week in, of 12 weeks unpaid time off. It might be a good option for others in a similar position. It's a way to ease into the transition, and it also gives you time to properly research things you never had time to do while working.
Don't know what others think on the matter, but it seems a bit boring time to FIRE with so much in lock down and excessive fear.