Oh Kel, you poor love. If you remember I commented a few weeks ago that my gorgeous Izzy had disappeared and some monster had been left in her place. She was the same as how you're describing Luke - VERY clingy, would only sleep on me and just full on all day long. Unfortunately I found I just had to go with it for the couple of weeks that it lasted because nothing I did made any difference. Then one day it just changed - the monster was gone and the smiles were back. Don't worry - your happy little boy will be back with you soon (you just have to survive until then!!)