I’m sorry. It’s all very difficult and yea, it’s emotionally draining. It’s ok to need that break.
Is your custody schedule one week on and one week off? Honestly, for young kids, it’s not a good schedule. Especially for someone as young as D3. When they leave for the other parents house, it feels like forever when they are going to see the other parent and tend to cling to them. I didn’t have 50/50 with my ex and there were periods where she didn’t see him for a week and she would get really upset because she knew it was going to be a long time. She rarely got upset when she went from my house to her dads, because she saw me very often and it would never be longer than 2 days until she was with me again.
You might want to figure out somethings here there is a shorter period of not seeing the other parent. I truly believe it helps
