I hear you and as you know I'm in a similar place.
But...something struck me about what you wrote.. you can have a plan for you, can't you? You can't control him but you can control you.
What if (and I'm talking to myself here too) you plan to sit tight until X date, and then rethink whether you want to file or continue.
What if you plan some other stuff that is in your control...What would that be?
I've been avoiding all talk of holiday planning too. It.feels so hard to be around intact families this time of year and I.don't know any D mom's who will be around. It feels like everyone is traveling with their family to see their family. And those of us solo are just left out.
Maybe I should just take my D on a vacation alone. That just feels scary and difficult to me.