Complete NC is impossible with kids, unless the WW/WH decides to completely abandon ship - there are sitch's here where that's happened so it's not unheard of.
But, you can get very very close to complete NC/Dark even with kids. I only communicate with W when it's about the kids or finances. Now with being physically separated for a while, the finances are longer something we need to discuss.
The frequency of communicating about the kids also depends - I only communicate about bdays, holidays, the schedule split, if they're hurt, etc etc. But, even with so many things that we could communicate about, it is very rare that I send a message to her.
So, you can have a very high degree of NC even with kids. You don't have to communicate about everything with her. I don't send pics of kids to her and nothing that would look like pursuit.
This strategy has been amazing for my own mental and emotional sanity. It can be done and there are other people here who have also done it - Joseph9 comes to mind right away.