sideload paytm wallet using swiggy/zomato using cc.
send that money to bank and use it to invest. or invest directly from Paytm (not sure if you can use wallet money for investing in paytm, but check).
limit: 4k per month. loophole will allow you to do that 30k per month, but risk of getting flagged by paytm and getting sideloading option blocked.