I have checked with Jio technical head for the area and he also confirmed that the upload speed is capped at 1/8th of download speed on paid plans. He said 1/8 but it looks more like 1/10 from user reports.
@gomfi, you can keep it unrecharged as a secondary connection and use it by recharging weekly plan as backup when primary ISP has issues. Useful feature of prepaid broadband services. I plan to do that once Jio Fiber comes to area.