You can just make the switch. It doe take most gliders a couple days to adjust to a new diet so they may not eat a lot for a day or two.
The original HPW recipe has a version for Breeding Gliders which uses 1/2 cup Wombaroo High Protein Supplement instead of 1/4 cup. Here are the directions.
http://www.gliderdad79.com/hpw.php