I did stop for two years once, after that break I went on for ten years.

I remember starting again from the bottom, learning chords, doing some scales.

It was really hard even thought I was young.

I think the best thing would be to start with songs you used to play. Just learn the chords once again.

I would start there, pick up a few old songs and enjoy the memories :)

After that go for some scales (build speed and accuracy)

I wouldn't get into a band for at least 6 months, give yourself time to get those skills back.