When you’re raising two kids that are the same age side-by-side, it’s really hard not to compare them. But remember that your twins are individuals who very much have their own personalities, likes and dislikes. That means they’ll reach their developmental milestones at their own pace.
Milestones usually happen within_ ranges _of time — for walking, it’s typically between nine and 15 months. In other words, it’s perfectly normal that one twin will be walking well before the other. What’s more important than the age your twins reach their milestones is whether they’re progressing in the right direction. But if one isn’t standing alone by 12 months or walking by 18 months, you should discuss it with your doctor.
Keep in mind that since many twins are born well before their due date, milestones are usually age-adjusted up to two years. If your twins were born at 34 weeks, for example, you’d add another six weeks or so to their milestones timeline. Look at each child’s progress individually, and discuss each of their development with your pediatrician at regular intervals — that's a better way to know that they’re both on track than comparing them to each other.
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