I have been spending a lot of time collecting free CEU's this year. It seems there is no end to the options. Check out CDC COCA calls/webinars, University of Nevada Medical Center, Johns Hopkins Coursera classes (I HIGHLY reccomend the contact tracing class) , Immunize Nevada, American College of Medical Toxicology, Allergy and Asthma Network, ANA, CDC Learning Connection. I sign up for webinars even if I am not going to be able to make it to them. This often allows you to watch at your own time, but it also ensures they email you for future webinars. It takes a little digging but there's a lot out there right now.
Also check NEUSHA's library for free classes: https://neusha.org/index.php/online-program-list/