At this point in time according to the official schedule for TS PGECET, there is time until the 25th of November to upload your documents. There are 2 ways to go about it now. You either can upload the Hall ticket of the back log exam that you appeared for and so it will be an indication that you are awaiting your results. Because even Candidates awaiting their results are eligible, you can try this. The other way is too get an undertaking from your Principal or HOD stating that you are still pursuing your course but at this point in time, you fulfil the eligibility criteria to appear for counselling. That means that you are still waiting for your results. That should work too. Also write to them at:

t spgecet2020@gmail.com (https://pgecet.tsche.ac.in/UI/ContactUs.aspx#)