If you notice that all the food is gone in the morning then gradually increase the amount until you figure out how much he wants to eat. If you find that he is getting obese on this amount of food, then cut him back a little, especially in the fat and protein department. You may find that your glider will go through cycles where for awhile he will consistently eat the same amount of food in an evening, and then, for no apparent reason, he may eat hardly anything for two or three nights. Perhaps they sense a change in the weather. A friend of mine told me that her gliders won't eat if there's a thunder storm brewing.
Baby foods work well.
All nuts fed to recent weanlings should be shelled as they may not have developed the dexterity needed to manage it themselves. To ensure that your gliders are getting all the nutrition that they need it is a good idea to supplement them with a good quality multivitamin which contains at least twice as much calcium as it does phosphorus. There are many nutritional supplements for small mammals, birds and reptiles to choose from . Some are in powdered form and are designed to be sprinkled over food while others are designed to be added to water or juice to make a nectar. If necessary, several supplements can be used in combination to deliver the desired ratios of vitamins and minerals.