Basically, reborn dolls are not intended to be fed as they do not have the same internal structures as real babies. They are usually not hollow but have a more solid structure to maintain their shape. Therefore, it is not advisable to attempt to give liquids or food to a reborn doll as this could damage the doll and lead to leaks or other problems.

Reborn dolls are primarily collectibles or decorative items that can be used for display and play, but are not intended for interactive play such as feeding or bathing. If someone has a desire to feed and care for a doll, it would be better to use a special doll for this, designed for such activities, or to care for a real baby.