hiii ,

for btech or B.E. IT branch and computer are same and there portion are also almost same , so it does not matter much if you take IT of CS and companies also do not separate IT and CS branch in placements they are treated as same .

so , do not worry about CS just take IT branch .

for colleges and branch you can get through ap eamcet use the free ap eamcet college predictor - https://www.careers360.com/ap-eamcet-college-predictor?ici=cp-listing_root&icn=AP-EAMCET-College-Predictor