I know the feeling. I'm at day 23 ... but reaching day 30 won't be a big deal. There won't be any deep thought about "will I stay sly?".
This is a part of the "new" me. I haven't had any negative feedback about being sly. It's been the source of a lot of jokes (most of which I initiate) which puts anyone at ease that might not have been.
Being in my 50s I long ago dealt with youth-oriented culture and issues. I am who I am, and I like the person I am very much. I don't take myself too seriously ... and certainly don't expect anyone else to do differently.
Sly is an integrated part of being me. Whether it's day 23, 30, 48 or any other.