H1b visa expiring on october 12th through TCS and still in india, doubts regarding h1bextension

my petition is going to expire on october 12, and still in india, dont know when these guys send me,if i go to usa in april/may,by when my employer TCS has to file extension is it before 6 months?what is cost of regular processing and premium processing?if extension filed before 3 months of expiration in regular processing, my extension will be rejected?again i have to come back to india and try in cap exempt?please help mee

i would suggest don’t think too much. Even in case they didn’t send you to us before Oct 12, you can apply for extension/under cap exempt for getting validity for remaining period. In general people used to apply for extension 3 months before of expiry.