Jello is fine for a liquid diet. Just nothing that has red dye. Also nothing red,orange or purple. You can also have broth, sodas, coffee, tea. You can have sugar in the coffee or tea. Keep checking your sugar levels and if dropping use real sugar in the coffee or tea or have a non diet soda on hand to raise levels if needed.

I have my instructions … just wondered how everyone kept from going low bs.

Clear liquids- water,black tea or coffee.Eat easily digested food- no fibre,white bread ( if you have too).no dairy
You should have received an instruction sheet with clear guidelines
If you haven't contact the department asap