I have done shared parenting since my sons were 13 months, and three years old. It CAN work, if you are both willing to be co-operative, and put the children's needs ahead of your own feelings.

I'm a family law barrister, and have seen too many families that HAVEN'T put the children first. I'm NOT going to let that happen to my boys.

It is conflict that affects children. Whether it's your body language, your words, or your mannerisms (or your X's), it is really important to avoid showing your children conflict between their parents. Age doesn't matter for conflict.

Shared parenting CAN work. If both of you REALLY want it to work.