u/BarBeginning2595

I have been asked to show around $7,000 annually after I have been given a tuition waiver and $18,000 annual stipend. I have no issue regarding showing the bank balance but the issue is that I don't have a 2-year bank statement which has been mandated as a requirement by the embassy. Is there any alternative like showing an education loan or asking some institution like a school or sahakari for sponsoring me, by which I can show a statement with 2 years? (PROFESSOR IS READY TO WRITE ME A LETTER STATING THAT HE WILL SPONSOR MY REMAINING AMOUNT BUT IT WONT BE SHOWN IN I20 Just asking for genuine suggestions