How to spend 50K on card without spending it?

I recently acquired an IndusInd Pinnacle credit card, and I want to make it lifetime free by avoiding the first year's charges of ₹5,000 plus GST.

To do this, I need to spend ₹50,000 within 90 days. However, I don't want to use my own money because this card has a maximum cashback of only 2.5%. Is there a way for me to spend the required amount and get the money back into my account with minimal charges, so I can effectively make it free without actually spending?