I dont give my gliders pork becuase it's one of the most difficult meats to digest.
As far as ground hamburger, turkey or chicken - I always put it in a pot of boiling water until its cooked. Then use a strainer so that most of the fat is drained out.
If you do fry it in a skillet, then put it in a strainer and run warm water over it so you get most of the fat off.
As far as preparing smaller portions, you can measure out what portion you want to feed nightly and freeze in individual servings. OR you can serve it to the suggies fresh for a night or two and eat the rest yourself.
Again - you CAN add herbs to their food. Sesame seeds are also a good source of calcium.