The booster shots are only after 5 or 6 months, depending on the state - and the bureaucracy "experts" have managed to turn people away because six hours (!) had been missing to make the six month spacing (e.g. https://www.waz.de/staedte/velbert/sechs-stunden-zu-frueh-ke...).

Our bureaucracy and inability to improvise in times of need will kill us all.

The reason boosters are needed after 5 or 6 months is antibody levels apparently drop around that time, booster tops that up roughly speaking. Having a booster dose within that time period does not magically make you more immune.

My son (1, NL) got certain vaccines a few days too early (they should've noticed that when appt was made, and now he has to get the vaccines again, or he is not offficially vaccinated against them. Infuriating but otherwise where do you draw the line with exceptions.

By the way, isn't it there something like the "forgetting curve" for the immune system which could justify administering boosters in specific intervals and unjustify the naïve "better sooner than later"?

I'm in SH, our vaccination site has a big warning that you'll only be able to register 5 months after your last shot. Now I'm at my (boostered) parents over Christmas, so I'll just wait till next year and get it then, it's not as if I'm particularly exposed with no contact to anyone outside the family.