Ok from my POV it sounds like, as you said, she is at 0/1 and your are like 10-100.
If the children sleeping thing is able to be changed then yes do all you can but when it comes to you and your wife you may have to work really hard to reset your expectations, press the Patience button again (and keep it held down) and expect it to be there for a while.
I would suggest you need to sort yourself out and expect that to be the norm for a while. I don't know your wife's emotional batteries are like but it may be that she's flat and just running to catch up and as a result she's got nothing left for her let alone you and her.
How's your money situation? Can you afford to send your wife away for a bit of RnR? Something that's specifically just for her, maybe even go see a really good friend if not hotel/spa type stuff and leave her alone (unless she reaches out to you) and give her time/space to breathe, rinse and repeat may well be necessary....it might help??
Also what do you do for yourself? Run, swim, gym, learn something new, something that you can feel passionately about so when it comes to checking in with your wife she sees that passion as it can (it might take a while as she may well be refilling her emotional reserves up so again patience) be very attractive.
So my thoughts (mine not telling you to do anything as you know your situation along with your DW best) are sort the kids sleep hygiene out, give to your wife without asking for anything, 'ave some good quality you time, learn something new and talk, talk, talk cos without that communication it's like walking through a closed plate glass door.
Good luck mate, remember you love her.