Kittens typically undergo some behavioral changes as they grow. Young kittens are often active, curious, and playful. This is part of their nature and how they learn and explore the world around them.

As kittens grow older, many become more mature and composed. Their behavior also becomes more stable, less impulsive than when they were young. This usually becomes apparent as kittens enter adulthood.
However, every cat is unique, and their personalities and behaviors can vary from person to person. Some cats may remain more lively, while others may become relatively calm.
Besides age and individual differences, a cat's behavior can also be influenced by a variety of factors, including environment, health status, and social experiences. Therefore, it is impossible to simply predict whether a kitten will become more composed as it grows up.

If you are concerned about your kitten's behavior, or if it is unusually active or impulsive, it is recommended that you consult a veterinarian or a professional pet behavior consultant. They can provide more specific advice and guidance based on your individual situation.