A fast question about player physics (Unity 5, C#)

Hello there!

I've got a little problem. I'm actually working on Player Movement script. I use CharacterController, not Rigidbody. My only problem is that when a player jump and hit some platform by its head, it stay in that position for a while. I get it like it just wait until get amount of max jump height. So I would like to add here some force that will cut off the max jump height or do something like this so my character will just fall down, or even bounce down from the collided object. The problem is, I'm not even sure where I could find informations like this or even how to spell it in google/documentation to find exactly what I need.

Does anyone know any tutorial or which section in documentation it is? Or if there is just an option in Unity engine, just anything that could help.

Best regards, Me.