> Don’t get me wrong, I got my 3 Covid shots. But that’s within 6 months. No other vaccine is that frequent.

That's not at all true, though the number drops pretty low when you eliminate the various series for infants that have doses at something like 2, 4, and 6 months (and often a fourth at 12-15).

But even eliminating those, there's a 3-dose/6-month HPV vaccine series, and a 3-dose, 6-month series for Meningitis B for populations at elevated risk, and maybe others.