Have a little buttermilk but dilute it 1:3 means, 1 part curd and 3 parts of water, this will improve digestion and controls acidity as well.....but keep in mind that " Curd " on the other hand will increase the acidity, so thick chhaas will never help.
Next Steps
Timely Breakfast, lunch, snacks and dinner is necessary, also avoid oily and spicy food since it will increase the acidity problem.
Health Tips
Still if you need any medicinal help, do contact me through personal consultation tomorrow morning.