Change, though sometimes scary, is often good. If the current teacher is already reaching out to you, that's a really good sign. Part of my teaching time is with second graders, so I can tell you how much fun is it. One thing I really like about second graders is their sense of humor. Their jokes really are jokes!
They can do some things independently but are still young enough to really love having their teacher's help at times. Most of my job is 8th grade and I have several who'd rather cut off their hand than admit they need help.
I'm excited for you! I think you'll love it.