CPEThink has a large selection of on-demand courses which are quite good.  The rates for the unlimited bundles, available for 1 or 2-year subscription, are also reasonable: https://www.cpethink.com/

CCH CPELink also offers courses with very good technical contents.  I use them for in-depth topics I can't get elsewhere: https://www.cchcpelink.com/search/?&ss=4

For updates, I use a variety of sources including accounting and law firms.  If there are charges for CE/CPE, they tend to be quite costly and I'd forgo the hours but attend just for the contents.

If you are solely looking for hours to fill the gap, I agree with George that my-CPE is a good portal.  Otherwise, I find those courses to be generally heavy on marketing and light in contents.