The same people who doubted you will act like they always believed. Let them. You’ll know.

Memory is generous to the person doing the remembering. People who shrugged at you early will genuinely recall having been supportive, because nobody keeps a tidy record of their own scepticism. Demanding they admit it costs you energy and buys you nothing. The thing you actually wanted was the result, and you have that.

When the sudden support arrives, take it at face value and keep moving. You can let somebody keep their flattering version of events without agreeing to it inside your own head. Save the real story for the people who were there.