drills to keep your hands from dropping

Try loading them into a higher position with the back elbow loading slightly behind you. Its very common for young hitters to lower their hands as the pitch approaches. Loading your hands and rear elbow slightly up and behind you can help get you on the right track....Video would be very helpful.

You can also try starting your hands lower in your stance...(if you were to extend your thumb of your top hand, it should poke you in the armpit). As you load, raise them up and back towards the catcher slowly so they are slightly behind your back shoulder...they should reach this point about when your stride foot hits the ground.

This has helped quite a few hitters I know.

Dropping the hands is many times a sign that the batter is carrying the bat through the zone rather than swinging the bat.

T-ball and the ethic of making contact directly above the plate usually cause a player to develop this habit.

The nature of the swing should be such that the first movement of the 'swing' should propel the bat head at the greatest speed. This in turn will give the impression that the bat would become lighter to handle and quicken the swing.

Once the bat head is in motion, swing your hands to the ball. Gravity and inertia will do the rest. Remember to follow through on every swing to allow the bat to slow.