Listen! hiatus hernia is 'common' at our age

and we are advised to eat little and often.
DO NOT stop the Prozac however good you feel right now. DO NOT take it then lay down; leave at least one hour before bedtime.
You may need a different antacid. Some people have to try a few before they find one which suits their gut. Good old milk of magnesia or Rennies is enough for me, though I may need to take more than recommended in order to stop the heartburn.
Sitting up at night can help if the burning is bad.
Do not eat acidic food stuffs.
Acitmel can be soothing as can LIVE yoghurt.
Eat bland food stuffs for a while, i.e. grilled chicken with the skin r emoved, no butter/fats, green veg., bananas ............