The phrase "transitioning baby" refers to a baby who is changing from one stage or state to another, such as moving from breastfeeding to eating solid foods, or moving from diapers to using the potty. Full definition
They have a line of cups and bottles that help transition a baby from a bottle to a cup. (babygearspecialist.com)
Keeping these weaning tips in mind will help transition your baby from the breast to the bottle more smoothly. (whattoexpect.com)
The Simply Natural ™ bottle gets good reviews from parents that are in the process of transitioning their baby from breast to bottle feeding. (babygearspecialist.com)