So sorry that you are going through this, because I too understand how draining the texts/calls/etc. are, even if you don't reply. And I am also worried for you. Keep documenting. Seriously - how ballsy is it of him to start with the crappy texts less than 24 hours after you left court? He knows you're going back in 30 days, yet he continues to be insulting. This guy must think he's untouchable, and that makes me leary. My STBXAH is like that - anytime he hears no it's like a complete shock. Sense of entitlement, big time.
Take care of yourself and your girls and keep documenting! I hope the next 29 days go smoothly!