I had been learning Welsh using SaySomethingIn.com, the language learning system was a small amount of spoken Welsh every day, so that you eventually start speaking without thinking, and you learn the writing later. Pimsleur have something similar.
I had planned for my forest garden design classes to be about an hour (my original course is 3 hours 45 minutes!) but maybe I should be looking at a small, regular format? Something you can watch every day in 10 minute chunks? A condensed course of 20 x 10 minute chunky classes?