I have a new baby too and can relate.
One thing we need to realise and accept and work around is that disturbed sleep messes up our system and causes cravings.
The thing is to figure out how to deal with those so that they don't impact your health negatively.
Right now, I've had very, very little sleep this week (I have 4kids) and I'm trying to figure out how to deal with this.
We can do it.
We can do it but our situations are different fom those whose babies sleep all night or those who haven't got sleep deprivation to contend with.
I wish I could tell you what the solution is!