I am a Montessori administrator and I know your concern about Covid. Certainly don’t rule it out when everything is up and running though. A good Montessori program, started early, reeps SO MANY benefits! Even if it is 5 days a week part time. As for potty training, look into cloth diapers sites (even Etsy). A lot of the cloth diaper manufacturers also make training pants and they tend to run small. PM me if you need suggestions.