hello,

You will fill the highest mark you got in the subjects you have attempted twice. Passing year will be 2019. Don't change that. Just fill the highest marks for the subjects in which you appeared improvement exam.

If you fill any wrong details then you application form will get rejected so follow the guideline and rules to fill the form.

You have got such a good percentile and there are many chances you can get an admission in low ranking NIT campus else in government engineering college of your domicile state.

here the link for NIT cutoff:-

https://engineering.careers360.com/articles/nits-cutoff-for-top-btech-branches

Hope it helps!