So…..warm up with the finger exercises - stretches and then snaking up the neck, keeping your fingers as close to the fretboard and possible. I am unable to get my scanner working tonight but I will try to scan a diagram for you when it agrees to scan again.
Practice the new "closed" chord shape using it for the F chord. It is the third shape on the page that I gave you. Remember that the root is on the C string. Use Iko Iko (BUG book) and On top of Old Smoky (Daily Ukulele) to work on changing from C to F (both closed shapes).
Continue to practice the Tennessee Waltz using closed shapes and 3/4 Waltz Strum.