I don't have self-rising flour. Can I still make the biscuits?

Yes, you can make your own self-rising flour at home. For each cup of all-purpose flour, add 1 1/2 teaspoons of baking powder and 1/2 teaspoon of salt.

Can I prepare these biscuits in advance?

Definitely! You can fully assemble the biscuits and then store them in the fridge or freezer, wrapped individually. When you're ready to eat, just reheat in the microwave or oven.