Foster Care Support Group
Foster care is a system by which a certified, stand-in parent(s) cares for minor children or young peoples who have been removed from their birth parents or other custodial adults by state authority. Responsibility for the young person is assumed by the relevant governmental authority and a placement with another family found.
He was excited about a 7 year old they are like tiny people. If they fall they cry a little get a band-aid maybe or even walk it off. They play catch, you can build forts, watch sports, get messy. All stuff he knows how to do already.
Babies however are not only boring and time consuming but they are like tiny little aliens and very fragile ones at that. (Which to a man is terrifying.) You clean them up so they can get messy again, you listen to them scream wishing they could just speak your language and tell you whats wrong. Then when they are finally quiet and possibly clean, odds are they are asleep.
Has he ever had any baby experience? Babysitting, siblings or the like? If not, odds are he just needs patience, time to learn and encouragement.