Just FYI we’re entering a summer Covid wave right now (especially western regions in the US); you can see it in the CDC wastewater plot here (and anecdotally a bunch of my friends are suddenly testing positive). www.cdc.gov/nwss/rv/COVI...
I really wish we could choose to do a booster every six months if we were so inclined — feels like I’m catching COVID right at the wane of immunity from the last booster.
You kind of can if you're willing to lie a little bit and pay out of pocket, the drugstores aren't really checking that closely though YMMV and you may have to drugstore hop. The funniest thing is I got mine two weeks ago at the same drugstore chain (not location) that I got my booster in the fall.
If you're willing to pay out of pocket, do you even have to lie? Last time around I decided to get both the Pfizer (mRNA) and Novavax (old fashioned cultured) shots, based on evidence that they interacted in useful ways. First I went to a drug store and paid for a Novavax shot.
Then I waited a couple of months and went to get my free Pfizer shot from my HMO. At first they balked because their computer told them I was up to date. But when I explained why I wanted both shots, they shrugged and went ahead.