what diet is best for my lil suggy i need to change his diet.

Do you only have one glider now? I thought you had 2 males and were getting a female soon.

There is no 'best' diet for sugar gliders but there are several widely used ones that have maintained healthy gliders for a number of years.

I have links to several widely used feeding plans on my web page to help you locate the information. My own GliderKids feeding plan is one of the options.

http://www.gliderkids-diet.com/Staple-Recipes.html

look over the various feeding plans and feel free to ask questions here if you still need help choosing the one to use for your gliders.