Day 4 – Sleep Props, Regressions, and Room Environment Sleep School: Toddlers & Preschoolers Day 4 – Sleep Props, Regressions, and Room Environment Previous Lesson Back to Course Next Lesson Submit a Comment Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment.