I actually wondered too if him having a kid was part of the drive to fire on all cylinders and build for the fam while also having a support system. Good question.
I don't know how many beats he does for each project, but I do know he makes multiple beats daily, regardless of whether or not he's working on an album or not. Nottz, Khrysis, and 9th Wonder all do the same shyt, and just make beats anytime they have some free hours. I've heard 9th and Alc both call it shooting jumpers. Just getting more and more reps in.
I've also heard that Boldy will fly out and just stay at the house for a couple weeks at a time, and they'll just record music every day, and later on they'll decide what goes on what projects. With other artists sometimes it'll be more specific. Benny flew out there this fall to work heavy on Tana Talk 4. With that Armand Hammer album, Al said he made less beats for it than usual but was more deliberate with the ones he made. And he said he does hold a lot of beats to the side for Boldy these days.