There was some excellent advice given here:
1) don't take it personally
2) these next five weeks be going over your ER plans/finances/health insurance options/retirement to-do lists/fitness to-do plans/retirement daydreams------if you find gaps, start to fill them in.
3) to the extent you may feel any personal guilt at not working what you think is a full load for your employer, talk it over with them. I am sure they are having you work at the load level "they" desire. When you clear the air on that, let the guilt go, and start visualizing your retirement life. All you can do is make clear you are more than willing to carry a full load. It is up to them to avail themselves or not.
I think they are giving you a much deserved "on the job vacation" for these last few weeks as you have tendered years of faithful service. Relax and enjoy it.
Visualize retirement. Visualize retirement. Visualize retirement. Do you see it? Can you feel it? Taste it? Smell it? Touch it?
Enjoy an exciting beginning of a new phase in your life.
from a fellow great retirement lifer.