Most children begin to actively reach out at approx. 3 months of age and orients itself more strongly towards the outside world. And by 3 months, most children can hold their head upright by themselves. It is therefore an excellent time to start slinging the baby onto your hip while you are doing things around the house or out and about. It is very easy to switch from the front position to the hip position and vice versa. Your baby is sure to love being able to follow what you are doing.