Tim used to edit the vlogs himself.
So, in theory, they don't need to hire an editor
or a nanny.
In a "normal" scenario where Jenn isn't a useless leech -
TIM:
He'd would wholly take over the filming
and editing of the vlogs as his "full-time" job.
He would go to the parks more, film seasonal events across all the parks (not just eating at Disney), go back to being a "travel / theme park" channel, and edit his work.
If he legit tended to provide Jenn with umpteen unnecessary hours' worth of footage as she'd say (doubtful because he's not even in the parks that long most days), he'd soon learn first-hand that he needs to streamline his filming practices.
She'd show him (hahaha - that's funny) any things she may have incorporated over the years that he may not be as familiar with now, and he'd pick up where she left off.
JENN:
She'd - gasp! - be a MOM and actually drive Jackson to / from school, dote on and care for Oliver, take both boys to the library, take them to their swim classes, etc. Make breakfast, dinner, etc. without having to tell people about it. (I know! Shocking) In short, be an attentive mother who doesn't try and push off her duties onto other paid help.
She'd recognize it is Tim's channel first and foremost. He started it. Now that they have two kids, she needs to take a backseat and let Tim do the bulk of the "real" work while she tends to their MIRACLE offspring.
They
could do a once a week "home vlog" where updates are given, if they so desire for the fruitloop stans (but hopefully by going back more toward a theme park-centric channel, they'd lose those nutjobs and gain more "normal" viewers / subscribers again).
And Jenn could maybe pop in for a "date" with Tim a few times a month and take the kids to grandma and grandpa. Like everyone else who has children have to do.
I know this scenario will never happen.
But makes the most sense to me.