First thing I do is throw the Sambar away. I even tell them, yaar don't give it to me, they are like but its free!
I eat dosa with chutney alone.
One thing I would recommend Indians is to try out Pakistani vegetarian foods. Either cook it yourself watching recipes from Pakistani youtube channels, or at some Pakistani friends' place. If you are particular about eating strictly veg (like no mixing of utensils and oils), for religious reasons, you can't get that guarantee from restaurants, but perhaps in the fancier places you can.
There are tons of Pakistani vegetarian foods. Dal Maash is one thing I'm sure you all must have tried in Punjabi restaurants, cooking it at home takes some experience, you almost always get it wrong the first few times.
Saagh is another one, with makai ki roti but can also be done with Naan.
Alu bhujia (its different from the South Indian one, its got a lot more use of tomatoes).
And my favorite - Chikkar Cholay. Again a world of difference from what you get in South Indian restaurants called Channa Masala.
So when you go to Pakistani restaurants, don't just blindly order Butter Chicken (I know that's the only thing that comes to an Indian's mind when they think of Non-veg
), if you want, there are always vegetarian options.