Watch the Chicken in the Rain: Bridge online guitar lesson by John Knowles, C.G.P. from Fingerstyle Journals
You'll love the bridge. It's only got one chord...G7. So, your 2nd finger is an anchor finger on the sixth string...all the way. And your 2nd and 3rd fingers are just swapping strings. Your right index finger gets a break because everything is thumb plus that ring/middle pair. So, the trick is to get the rhythm right.