Got my booster for the summer last week. It'll be at full strength by Memorial Day, and should last through Labor Day. I get my fall booster in mid-October: it's full strength by Halloween and carries me through all the winter holidays. Plus an N95 (of course!).
I think I'm going to get my booster tomorrow...plus I've heard certain "respected" elements of society mention that the vaccine something 5g....so I'm looking forward to bestest cell reception!