Bill practice the new chords, and break that up by practicing the scales.
Declan parents have Declan play All My Loving along with the recording. Also practice it solo to get all the notes right.
Nino parents have Nino practice Here Comes The Sun. Practice slowly and make sure all strokes are correct.
Griffin parents have Griffin practice the guitar solo for Little Black Submarines. Try to build up a little more speed. Then do Sick Boy.
Sam parents have Sam practice My Girl along with the original recording.
Amanda practice the new chords for dust in the wind and sleeping sickness.