B.T.
Dear mom:
I am a grandmother and did not have that particular problem, but I have a neice who is just finishing her residency as a medical doctor and has a 1 year old son. She put him to bed after doing all the usual feeding, changing, etc. and told the rest of the family who occasionally would baby sit, that they were not to pick him up, but once he was in bed for the night with his bedroom door shut..that was it. The little guy did cry a lot initially, but at 1 year old, he looks like a very happy, self confident toddler. I don't think I could have done it, but for whatever it's worth, it worked for my niece and it looks like it worked for Blake.
Good luck
B.