I would suggest to take less oily food and avoid fried food stuff.. Avoid spicy food and preserved food.
Home made food is best. Take good amount of fruits and vegetables.
Take regular medications.
Water intake depends on your treating physician.
Next Steps
Do consult a local cardiologist for looking at your heart function carefully and to guide you in regard to liquid intake and prescribe medicines
Health Tips
Avoid spicy and fried food..