Hi sir,
This discomfort of gastritis is due to your sudden changes in food intake. As you stopped your usual diet suddenly your body system can't accept it that fast... Proper diet plan should be followed to maintain your health and to reduce body weight with enough protein
Next Steps
For better diet plan you can consult a dieticien or can consult me online or directly
Health Tips
Drink jeera water when you feel gastric problem... Drink plenty of water and include fruits, vegetables and dry fruits in your diet.. Also avoid spicy and sour food for a while.. Can use curd