2-2-3
Block mechanics
- Shortest maximum separation — usually two or three overnights before the rotation flips.
- About three to four exchanges per two-week cycle among common equal-time toddler patterns.
Calendar trade-offs
- Highest exchange count — more calendar coordination than 2-2-5-5 or week-on/week-off.
- Two-week cycle alternates which parent holds which weekday block.