Get an attorney, NOW! Take half of that money out of savings TODAY! Once he takes it there is NOTHING you can do as long as you are still married.
Don't take all of it, that is not fair either. He will NOT keep his word! Believe it! My ex promised all those things too. But once he was out of the house, he took all the money out of both of our accounts, changed the locks on our business, turned off my credit cards, refused to sign insurance papers so I could make a legitimate claim and stopped giving us ANY support.
He told me he would help me start my business and get going-NOT! He told me he would never leave us with only the Texas max of $1,500 a month child support for two kids. NOT! Not only did he do that, but he fought to never give us anything but child support EVER! He also fought to make it mandatory that if I ever get married or live with a man he has to pay nothing. AND he stopped paying ANY spousal support 3 months after he left....during the temporary orders period...nothing! He tried to claim I was turning his kids against him so he should not have to give us anything. PLEASE!!!
All the while while he was not seeing them, leaving us for his girlfriend, and making it impossible for his kids to have even remotely the same life. Once they are in someone else's pants they are NOT your friend. I believed he would never do any of the horrible things I heard from other people. But he did and worse.
Now, a year after the divorce was final, I can not get him to pay his half of the medical bills. I must take him to court to sue for that. Get it ALL in writing or you will not be able to enforce anything.
Believe it, sweet heart. You are your only best friend now, and you must fight to get everything you will need. Be fair, but don't be nice. Your kid will pay for it later if you are too nice. Sorry to be the bearer of sad news, I did not believe it either. I hope he is not a liar like mine ended up being. Good Luck and reach out to your girl friends. They will help you more than you know.