Congrats on your glider. Luesistics are beautiful!
The sooner you can get another glider the better. They can become lonely and depressed and self mutilate without company. When you get another glider, be sure to get a female or a neutered male. If you don't do this, you will get inbred babies (unless you have lineage, but if you're getting another one from your aunt, I'm guessing that they will be closely related)
Sugar gliders should be on a staple diet. This will keep them healthy and help them not to develop HPL (caused by a lack of calcium) and a host of other problems. Here is a list of staple diets. info.petsugargliders.com/staple-diets/
Pellets shouldn't be fed as the main diet. I am currently feeding the TPG diet. It's fairly easy to make. It takes some time every month, but once you get used to it, it's easy. If you go with that diet, you'll also need to buy the calcium supplement that goes along with it. You can get that here www.thepetglider.com/products/tpg-complete-multi-vitamins-with-calcium-360.
It's expensive, but the diet CANNOT be fed without it.
I'm going to be switching over to the OHPW diet. You get get the ingredients off of etsy here www.etsy.com/listing/754753538/sugar-glider-ohpw-triple-pack?ref=related-2.
I haven't tried it yet, though, so I can't say if it works well or not.
What cage size do you have? Where did you get your wheel?
Having sugar gliders isn't easy! You're doing great. :) Thanks for reaching out ! If you have any other questions, don't hesitate to ask. :)