Any particular reason you don't want to take the DCB metal upgrade?
Limit upgrades seem to happen in two ways
- Pre-approved offers that the bank gives you based on your spends and overall relationship
- Manual upgrade given by sending your payslips / ITR as proof of income to the grievance cell
Right now you are at 5 lakhs and the Infinia Metal requirement is minimum 10 lakhs so you need a significant bump up still