Unexpected MS nurse appointment next week!

So got a letter with app with ms nurse next week, totally unexpected. Only a CIS diagnosis presently and thats from May. I was told by consultant that next app would be with him in oct time following 2nd mri. Could it be linked to a telephone call i made a few weeks ago with new symptoms? What can i expect from this type of appointment? Would it be support etc, see how im getting on? Consultant said my results very likely this is ms. I want to be as prepared as possible and ask the right questions while I have the opportunity!