Parenting Plans for Infants (Birth to 18 Months)

Infants under 18 months need frequent short contact with both parents, but overnight 50/50 splits are almost never developmentally appropriate. Stability of primary caregiver and feeding routine comes first.

Developmental Considerations

Infants form attachment through consistent caregiving — reliable response to crying, feeding, and sleep cues. Most developmental research points to one primary overnight home during the first year, with frequent (3-5x per week) shorter visits with the other parent during daytime. Overnights with the secondary parent usually increase gradually between 12 and 24 months as attachment diversifies. Breastfeeding creates practical constraints most plans should accommodate. A schedule that demands overnight separations from the primary caregiver before 18 months is correlated with increased stress responses and disrupted sleep.

Communication Norms

Infants don't benefit from phone calls or video with the off-parent. The valuable communication at this age is between parents: daily feed logs, nap timing, diaper count, any fussiness. CoreParent's daily log feature is designed for this. The off-parent reads; they don't interrupt.

Recommended Schedules

• Every Other Weekend Custody Schedule

  One parent has primary custody. The other parent takes every other weekend, typically Friday after school through Sunday evening.

• The 70/30 Custody Split

  Primary parent has ~70% of overnights, secondary parent has ~30%. Typical when one parent's work or distance limits weekday involvement.

Sources

• American Academy of Pediatrics — AAP's healthy-family-development resources include guidance on infant caregiver attachment patterns.
• Zero to Three — Zero to Three publishes research and guidance specifically on infant and toddler development, including family structures.