Being an only child has its advantages and disadvantages. If you are raising an only child, it will be hard to expose them to the dynamic of a group. Having to compete for attention with other children can be overwhelming for a child that lacks socialization. Providing your child with plenty of group exposure is crucial when trying to have a smooth transition into a new daycare.
Scheduling playdates with the children of your friends and family members is a great way to get your child used to playing in groups. Playing in a group will also help your child get familiar with concepts like sharing before entering daycare for the first time.