While there’s no ‘right’ age gap between two siblings, your family circumstances could influence your decision to wait less or more time before having the next baby. If your wife is over 35 or you are worried about her fertility, you might decide to try for another without delaying longer, but if your wife is still in her twenties and you have your hands already full of toddler twins, it could make sense to delay the third baby. Click here for more on the subject of age gap between siblings.