I'm not following your issue - are you insecure about having a CS degree, or your math background?
Life might be easier in the general sense with a BS degree (some companies stupidly require for promos, etc).
But if it's just math you're worried about, there's plenty of good resources online:
https://www.coursera.org/learn/mathematics-for-computer-science
and MIT's 6xxx (google MIT discrete math)
Also, no shame in doing KhanAcademy from the ground up.
It is easier to quickly pass recruiter screens with a BS. People with experience already probably can skirt by (which you already have!)
Also, just because you get a BS or MS in Computer Science, doesn't mean you'd be a better coder.
https://www.reddit.com/r/cscareerquestions/comments/izxoxz/why_do_so_many_people_say_just_learn_to_code_when/g6lsc01/
https://ozwrites.com/masters/