Cratering on cookie base

Hi friends. I’ve mastered cratering issues with icing on top of icing (just barely letting the base dry before adding details). I have not however mastered cratering within small areas directly on the cookie. I filled the small space with squiggles but still got cratering, I’m wondering if the issue is that my floor is just too thin? I definitely prefer a thin floor (like 10 seconds) but I’m realizing for these small sections maybe it’s too thin? Any help would be appreciated!!