Do NOT let him parentify those children, if there's any way you can avoid it. That jumped out at me immediately. I'd raise that as a concern to your lawyer. I will be back later when I have a bit more time xoxo
hugs

M 20+ T25+
S ~15.5 (BD)
BD 4/6/15
D 12/23/16

"Someone I loved once gave me
A box full of darkness.
It took me years to understand,
That this too, was a gift."
~ Mary Oliver