My son was a baby when I went through my divorce. My daughter was 9 years older. She was not his biological child, so there were no orders in place as far as her going with him.
My son went with his father from 5:30pm to 8am on Tuesdays and Thursdays. He went with his father every other weekend. On the weekends, my daughter went along as my husband was the father figure in her life. However, it turned into a situation where she was doing most of the caring for the baby. She kept an eye on him, bathed him, dressed him, changed his diapers.
My ex didn't say nice things about me and my daughter decided she didn't like going. There were many times my ex either had to work or go out of town to take care of his father and asked me to keep our son. I never refused. And, I never made him feel guilty.
Well, I did refuse one time. It was Halloween and he found out that I was invited to an adult Halloween party. My daughter was spending the night with a friend after trick or treating and he wanted me to keep my son and stay home.
I'd spent a week on my costume and planning. Had it been my weekend to have my son, I wouldn't have made those plans. Anyway, he just didn't want me going out and I went anyway.
Often, not always, men want more time with their kids and then realize it's a lot more than they bargained for. On paper, I had my son 67% of the time and my ex was constantly wanting it in writing that he had 50/50, but that was for tax and child support purposes only. It was well documented that he didn't always have him when he was supposed to as it was. It wasn't brought up in a derrogatory way, it was just a matter of fact. He was the one changing the schedule and giving up his time, not me.
Because my son was a baby, in mediation, they were opposed to a 50/50 schedule. A week away from either parent was just too much and an every other night thing just logistically would be too hard on a baby. So, we tried the schedule I mentioned, with a review in 6 months. We were welcome to go back sooner if it wasn't working.
My husband moved an hour away, which made things more difficult.
Long story short, we basically had the same schedule until my son was about 14 and my ex got to take him to school on Monday mornings as opposed to bringing him home at 6pm on Sunday nights on his weekends.
My son is 16 now and it's still not 50/50. It never will be. He's old enough now that if he wants to go fishing with his dad on my weekend, I don't say no unless we had prior plans, in which case my son wouldn't even ask.
I just want you to know that things do get easier.
It was so hard for me letting my baby go with his dad, but that's the price of divorce and I was the one who made the divorce decision. My husband left me no choice.
No matter how much animosity there may be, you have to keep in mind what is best for the children. And, they do need time with both parents.
As long as you convey that you understand that to the court, and you convey that you want them to have time with their father but you also recognize it may take time for them to adjust just to you not being married anymore, your main concern is that they have time to adjust to change in increments. They may not feel 50/50 is appropriate.
Some parents successfully do the 50/50 thing (frankly I hate that term because nothing is ever truly 50/50), but sometimes, it just makes the kids feel split in half. That's the worst possible outcome.
I encourage you to buy the book, "My Life Turned Upside Down, But I Turned it Rightside Up" by Mary B. Field.
You and your husband should both read it.
It's for kids, but the message to the parents reading it is pretty powerful.
I wish you the very best.