R..
It's worth a shot. I partially coslept with my DD, and I finally got her back into her crib. (she's 11 months)
I started by getting her to sleep farther and farther away from me, instead of snuggling. Then I started waiting until she was in a deep sleep and moved her to her crib. When she woke up I would let her fall asleep with me again, until she started getting used to waking up in the crib. Then I started putting her more and more awake in the crib, until now I can put her in awake, give her a kiss, and tell her goodnight. :)
It sounds like you have the same idea... just in a toddler cot bed instead of a crib. It worked for me, so I don't see why it won't work for you. Good luck!!! (BTW... It did take me about 2 months, because I did it very gradually. But it did work!)