Dear jayaraman

We are educational website,we will students to choose career pathways by guiding them and answering their queries and doubts

You must ask this type questions on relevant website like IRCTC,which is for Indian railways query.

Although you have 17 days, if it's sleeper class then probability of getting confirm is there if it's 3rd AC then it may come upto RAC quota. You can keep checking your pnr status and you can cancel before 24hr if it's not get confirmed to get maximum refund.

Next time Post education or career related query only on this platform

Hope this information helps you

Best regards!!