Hi

yes, of course you can keep weboptions on 22 October 2020 , i suggest you while keeping options try to save after every 10 options you kept because it helps you from few unexcepted issues and logout from the section and close browser once you finish keeping options and for more information go to below link regarding cutoff , counselling .. etc.

https://engineering.careers360.com/articles/ts-eamcet-counselling

i hope this information is helpful

ALL THE BEST