@planter Ours is a similar family like yours. We have one child and one senior parent. And we live in Tier-1 metro city.
Swiggy, zomato, and outside eating are too high in your case.
We do go out but street food like shops (example: ek plate pani puri + some chat = only 100 or max 150 for 2 people) This we do once a week or once in two weeks does not pinch on pocket while doing our sabzi shopping. This may not even cross 1k p.m.
Dinning out is only for occasions, birthdays, or anniversary, max 2wice or only thrice a year. That too it is in the order or Rs. 1500 to Rs. 2000. So, max 5 to 7k per annum.
You surely need to change your lifestyle considering your take home is 1.1L p.m.
Apart from this, our DMart bill, on average, is about 10 to 15k between two months.
Sabzi roughly is Rs. 500 to 700 per week.
Ok, I missed one other thing. I have a dog, and for him, weekly, we need roughly Rs. 600 to Rs. 700 eggs.