At the Baruch info session yesterday for the seminars, it was said that if you have not taken a previous course in the subject, that specific seminar is not designed for you. Applying does not cost anything, so I would say go ahead and apply, but I wouldn't get my hopes up on getting accepted to the seminars. For context, the question was raised by someone hoping to pursue further education in the data science field. They were interested in the probability seminar, but they only had a stats business class. They were recommended to take an undergrad course first.
It is looking more and more likely the CUNY schools will once again be online next semester. I would look into Baruch, Hunter, City College, and Queens College or any other CUNY. First keep up to date by seeing if they will in fact be online next semester, after that, go through there course listings for next semester and see what pre requisites you can take as a visiting student. Its relatively cheap and the benefit of being online means travel should not be an issue.
Edit: I see you have a deadline of three months, where my advice is given with the thought you would be taking the extra semester.. I guess with your situation, taking a chance on the Baruch pre-mfe seminar is likely the only route you have, provided you get accepted.