Six months is not long to go however, it sounds as if you have been planning this for a while.
Are you intending to fully retire when you get your pension or still work (maybe part-time) doing something else?
This will probably depend on your weekly expenses V Income. It is a good idea to not only do a monthly budget but consider your plans. Something we didn’t do as fully as we should have. Are you hoping to do more travelling (now that you are not tied to the school holidays). Do you have any particular hobbies you would like to explore (clubs, equipment, etc.).
I would also think about your Home. Are you considering moving/downsizing eventually. Are there areas in your home which could do with updating. Do you have too much stuff, etc. If you are retiring completely, or changing job are there things you could pass on to the school/colleagues before you leave.
There is also the Social and Emotional aspects. If you are retiring, what are you retiring to rather than from… Some people find it a big adjustment, others embrace it fully from day one. However, I get the impression that you will be in the last category. Enjoy!