Dealing with a kitten is completely different that feed a grown cat. A kitten is essentially a baby in every way and needs the right amount of nutrition in order to go from being a kitten to a healthy grown cat. Kittens are just like babies in that they need to eat right in order to have strong bones, muscles, and nervous system. You can't feed a kitten the same things that a full grown cat eats; kitten need their own special food until they are old enough to move onto the next step.
It's always smart to consult with your doctor before you start a regular feeding routine for your kitten, but you do need to recognize that because they have such high energy, they need the proper food to fuel their bodies. You will find that your kitten will nibble throughout the day because they have smaller stomach than a full grown cat.
Just as with human babies, there are going to be times that your kitten doesn't seem particularly interested in food such as when they are teething or have lost a baby tooth. In the same instance your kitten may eat a little more during growth spurts and such. Even when you kitten begins to look and act like an adult cat, don't rush out and buy adult cat food, they need to stick with the kitten cat food until they are a year old because of their need for a lot of calories.
There might also come instances that you need to consult with your veterinarian about your cat's food needs such as if your female feline becomes pregnant or if you cat has health problems that are related to what they eat.