Minor but culturally significant change: since Our Invisible Threads is not an #ownvoice story (I'm not Punjabi), I have asked someone who is to be an offline sensitivity reader. This person just informed me that, actually, Chandresh calling Navrita "Mama-ji" is really confusing because, in Punjabi culture, that is a term for a mother's brother (a maternal uncle). A mother in the Punjabi language is usually referred to as Mata-ji, Bebe, Maa, Amma, or Ammi.
So, I have made the necessary correction and now Chandresh calls Navrita "Ammi" as the person suggested (it is a loanword from Urdu, sort of, which in turn was borrowed from Arabic "Umm").
I have apologized privately to the person but I also want to make public apology here as it is never my intention to cause confusion or be disrespectful of a community that I'm not a part of.