Here is a list of things India, Indians and the world can do to stop Pakistan and Pakistanis to fund terrorism.
Diplomatic
No country should give a visa to Pakistanis.
Financial
Block all Pakistanis from fiverr
Block all Pakistanis from Upwork
Block all Pakistanis from using payment gateways
Block Pakistani exports
Technical
Block the IP range of Pakistan to block Pakistani web traffic
Cricket
Ban Pakistan from cricket
Detailed Explanation
Diplomatic
Financial
Technical
Cricket
Pakistani cricketers openly support Islamic terrorists organizations. The money given to Pakistan cricket board goes to Pakistani army and Muslim terrorists in Kashmir. These terrorists organizations are banned by UN.