Others in this thread seem dubious that quality could be a differentiator, but I think you should double down on that. It’s not just ingredients, but technique that makes food delicious and if you can truly scale proper par-cooking technique, that will be a strong core for your business, and difficult to copy from the outside.
I also think you are absolutely correct to focus on a core market who loves real Indian food. There’s no price you can put on your family’s home cooking, which makes it a good market for you to start in low volume.
Just a random idea as you grow: you might try supporting an “experiment community” the way Soylent did. I think that forum became https://www.completefoods.co. They encouraged people to share and develop their own recipes.
In the long term, you will need to compete against “monoculture” brands who are selling one size fits all products. Because you aren’t storing inventory, you will be positioned to sell a wider selection of products, even short runs of one-off special foods. Could be another differentiator.