Hold strong!
Transitioning is HARD. I think part of the problem, is its happening too soon before the child becomes FT. I transition just the week before their official start date (From my knowlede, most do) is ther any way you can push back untl the week before? Once he starts FT it will be easier. Not less hard at first but having him FT helps him wean from mom and be able to find comfort in you and trust. Its separtion anxiety. I honestly think if you can implement a gradual transition the week before it will be smoother. Mon: mom and baby for 1 hr. Tues: baby stays for 2hrs with no mom. Wed: baby stays through lunch (no nap) Thurs: all of the above plus nap and Fri: full day. This can be tweaked. Its so hard on them at that age but transitioning is usually for the mommy Stay strong! Come FT it will be easier!