Congratulations on your success!
We are in our first year of retirement. So far the only surprise is the staying put due to Covid. There are a couple of items which are not routine everyday living costs but we had anticipated and budgeted for, such as a new car and helping out DS with housing costs while he completes his dental school works. All is well.
So you are about where we were a short while ago. We loved it when we came to that last day of the first year of retirement and could finally crunch the numbers "for real" and know for sure that we made it. I hope you have that same experience - it's really neat (grin!)