How to wean baby mourning doves/ house finches.?

Man! I understand the dove. I had one that we knew was not going to live long and he never stopped hand feeding. That wasn't exactly his fault or mine. He really would never eat on his own. I hand fed him for 5 months. Basically you just have to cut down the feedings to one late in the evening and force them to eat seeds. Sometimes changing their location will help with that. I almost always sold my handfed babies when they were down to one meal a day and often they would stop that meal when they went home with their new owners.