You file, I believe for full custody if I remember correctly. She'll respond, likely for full custody for her. Lawyers will set a court appearance. Judge will order you to meditation. Mediator will strongly urge you to compromise. Mediator will AGAIN strongly urge you to compromise. Only then will you go to trial.
You forgot about the doing nothing for months at a time, wasting his money emailing and acting as if they are helping you (billing $300 per email).
Waiting until you are in the courthouse (which they bill you for a $1200 day in court), and THEN having a sense of urgency (because the Judge will scold them for not doing more, then dumping it in his lap).
Scurrying around trying to strike a deal at the last minute (at $300 per hour), before finally heading in to the court room, and them asking for a continuance before the judge orders mediation.
Meanwhile, his kids are living 4 (?) hours from him for another 3 months of $300 emails, and doing nothing until the NEXT $1200 court date approaches.....
Meanwhile, you STILL don't have custody, or see them on any kind of regular schedule, because you are trying to be "reasonable" , and allowing for the opportunity of staus quo becoming the new reality for the courts to rule against you, because too much time has passed, and the kids are settled now...
And you STILL haven't addressed Marital property, or your Marital status....