Yeah, too much change at once can be overwhelming. But, with a change of attitude, it can be an adventure. Usually my first reaction to some strange, unknown situation is that I don't like it - it's not what I'm used to! But, on second thought, what could come of this?
You may find different teachers that can expose you to things you were unaware of. You can have correspondance with your old teachers and share in their journey.
Old friends leaving makes space for new ones.