Seeking dating advice as an addict

Hi guys, im looking for some advice or perspectives on dating as an addict.

I (30f) just very recently started dating this guy (42m) and things are going really well.

The thing is, Im a coke addict with a daily habit and Im feeling weird that he doesnt know this. Its not that I really want to tell him, but I also kind of feel like im lying to him about who I am.

I am trying to stop doing it, ive cut back A LOT in the past few weeks and im feeling really good about stopping. But im not there yet.

I just dont know if I have an obligation to tell him about it? Cuz if he somehow finds out months later that seems way worse, like that ive been keeping this secret the whole time. But im also worried that telling him now will change the way he sees me.

Id just love to hear some other people's thoughts on this! Thanks so much!