W.B.
Hi J.,
Well being a home child care provider myself and a mother I am going to give you both sides of my thoughts on this.
Daycare provider thoughts first. I think you should talk to your normal provider first and see if she can give you any insight as to why he was/is always crying when you pick him up and then why he cries and for how lomg after you drop him off. Just because he does cry doesn't always mean that there is something wrong. And communication between you and your provider should be the 1st thing.
My mommy thoughts, I think you should talk to the provider that is currently watching him. Talk to her about how he isn't crying anymore and how he was, she if you can give you any insight on the matter. I think you should talk to both of them 1st before assuming something is wrong with the other one.
And then discuss with the current provider when she might have a fulltime opening if you do want to move him there. Depending on what that answer is would dictate when you would let your other provider know of your plans.