If you're a newly single dad, you will want to spend as much time with your baby as possible. The problem is, if your baby is so young that he or she is breastfeeding, it will limit the length of time you can spend with your child.
Co-parenting isn't something that you can only think about once and then forget about. For the entire time that you and your ex are parenting your child, you will have to work together. In a co-parenting situation, you are working closely and will need to continually put forth an effort if the arrangement is going to work.