How to manage your expenses or lifestyle creep?

Me and my gf started living together and we can sense that we are spending a lot in certain areas. We are using takeout from zomato / swiggy on a daily basis, use blinkit / instamart for basic groceries and daily items. Using cab always for our commute. We are earning good and we can afford it, but we didn't realise we are spending quite a good chunk in this and we want to reduce expenses. We don't go on a shopping spree or buy other unwanted items out of impulse. Any suggestions would be helpful.