Will taking a melatonin gummy after brushing my teeth cause cavities?

I brush my teeth at 8 pm and shower right after. I cannot stand the thought of brushing my teeth after a shower. Don’t know why. I have anxiety issues revolving hygiene practices. So that’s my routine. At 9:30 I take a strawberry melatonin gummy with 1 gram of sugar in it. Can this cause cavities? I’m worried now. I’ve never thought about this before. Once this bottle is gone, I’ll switch to the pills that you don’t have to chew.

I can’t take the vitamin before I brush my teeth because it will be too early. I take it an hour before I want to sleep. I don’t want to sleep at 9. I want to sleep at 10/10:30. And I can’t brush my teeth again because I can’t brush my teeth after I wash my face. I have quite a lot of the vitamins left so I’ll just have to deal with it I guess.