If he's very irregular, you may have to take the initiative and make some parts of his life as predictable as possible. The more consistent you can be, the easier it will be for your baby to settle into a routine. Schedule meals, baths, trips to the park, and bedtime at roughly the same time each day. Schedules become more important to family stability and a baby's well-being as time passes. If you're very irregular, it will be difficult for your baby to figure things out, learn about life, and be able to trust that the environment will meet his needs.
Children thrive on regularity and consistency throughout childhood.
Help him settle to sleep. Comfort him, but not so much that he gets all wound up again. Beautifully awake in the first hour of life, they often follow that alert period with a deep sleep. Typically groggy for the next 12 to 24 hours, they will awaken ravenously hungry. It's not uncommon for newborns to feed every hour during this time, which stimulates milk production.