Waitlisted still?

Hi everyone, seeking advice on some things. I’m just about to start my MSW/MPH program in the fall. I registered for classes and am currently only enrolled in 2, methods for SW practice and my practicum (which I’m still figuring out but I digress). I was accepted pretty late, so by the time I was able to register all the in-person class slots were full. I’m on the waitlist still for 2 classes, #2 for one and #3 for another. I emailed my advisor, but what are the chances I will be able to take the courses? I already emailed my advisor asking if there are other courses I can enroll in to still get the credits for my plan of work, but I haven’t heard back. Anyone else faced this problem this late? I’m quite nervous. Any help would be appreciated!