Joint Custody

If you share joint custody with your x you must have a hobby. I would first suggest to any woman who has suffered any kind of abuse to find a meeting. Attending meetings is the best thing in the world to relize you are not alone. You can learn so much from other women and the professional who will be running the meeting on how to cope with a former batterer. Most of them will try to hurt us through our children.
Next you should take up a hobby. When my daughter is not here I go through empty nest syndrome everytime. I sometimes sit like a zoombie until she returns. I have learned to keep my mind busy. I focus on my homework, or work on different crafts.
I plan these things for when my daughter is not with me so that when she is everything else is done. That way when she is here I can focus fully on her. That way our time apart if it is a long weekend, I can recall plenty of memories to mind of what we did while she was here.
I bake with her and read. We play games and talk. She likes me to message her and do her toes. I make sure that I don't waste the time we have together. Her return seems to always just pick up where we left off and the pain in my chest is gone.
So find a meeting and find a hobby. Always calmly question your children and stay calm when they answer. This way you will keep and open relationship with them and they will tell you everything that goes on when they are not with you.