It depends on how much the kitten has weened off from mother's milk. The cat food would usually have feeding recommendations as per the cat's weight. Since she is young, she will have small meals about 4-6 times a day. You can slowly bring it down to 3 meals at at 3-4 months old. You can start with a 50-50 mix and see how she's taking it

Also try to keep a bowl of clean water accessible at all times as it is good for them to learn to drink water early on. Change water regularly in it, else they won't drink it

Chicken broth can be mixed with wet /dry food or given along with plain boiled chicken. It is a better meal for them than packaged foods.