Government recommends booster after five to six months in my country. To clarify, they do not yet recommend boosters to the end of time, just a booster after the second.

> 6 months is overkill unless you're extremely high risk

It is a general recommendation here.

Three months, available to all adults.

"All adults in the United Kingdom will be able to get their booster Covid-19 vaccine doses three months after their second shot, the government indicated on Monday, in a dramatic acceleration of the country's inoculation drive that comes amid fears over the Omicron variant."