Yes definitely you shall be eligible for JEEadvanced exam, if your score after improvement exam for 2 subjects corresponds to an aggregate of 75% or more.

As per new rules by CBSE, you can give improvement exam for even just one subject as against all 5 subjects earlier.

You can aslo alternatively be in top 20 percentile post improvement exam, to be well qualifeid for JEEAdvanced.

You also have to be in top 2.24 lakh students from JEE main 2018 for appearance for JEE advanced.

To know more about JEE advanced eligibilty criteria check below link:

https://engineering.careers360.com/articles/jee-advanced-eligibility-criteria

All the best..!!

Yes, you will be eligible to get admission in IITs through Jee advanced if you give imporovement in 2 subjects and get 75% or above.

To know about the advanced eligibility criteria, you can go through the below link -

Jee advanced eligibility 2018

Hope this helps!!!