0 seen Β· 0 emerging Β· 0 in this age band
Not yet β not seen so far. Emerging β trying, or doing it sometimes or with a little help. Seen β does it consistently, on their own. Bands move at the halfway point (about 3Β½, 6Β½, 9Β½, 12Β½ and 18Β½ months). Milestone windows were compiled from Singapore and international sources in November 2026. Checklists are monitoring guides, not diagnostic tools.