Can I take benefit of India-UAE DTAA?

I am based in the UAE and have sold mutual funds and listed shares over the past year with gains of about ₹16 lakh. I have obtained TRC (taxation residency certificate) from the UAE tax authorities. TDS (tax deducted at source) has been deducted on both sales. An NRI (non-resident Indian) friend told me that I cannot avail the treaty concession because of a change in Indian income tax laws in 2020 since my income from sale is more than ₹15…