Hello,

Your expected rank will be around 112971.You can calculate your expected rank using the formula (100-your total percentile)*869010.

Where 869010 is the total number of candidates appeared in January session.In April session 1200000 candidates are expected to appear then your expected rank can be calculated using the formula (100-your total percentile)*1200000/100

You have not mentioned your category.Assuming that you belong to general category it is difficult to get seat in any NITs.As you have score above 85 percentile you may have decent chances to qualify JEE main.You may prepare for JEE advanced if you want to get admission in IITs.If not you can prepare for JEE main April session and do well.