I used to do transition days/week but soon realized it was those kids that took longer to FULLY transition into our program. Throwing them right into our routine, they are usually fine within the first week. (Of course, there are always exceptions!) The only time I do transitions now is when a parent really really wants one. They are usually fine with not having one after I explain my reasons and observations with past children. When I do transitions, I do half days every day with them going home after lunch but before nap.