Yes, its getting pretty late. But, there is no notification about the dates for document verification yet on the official website or any other place. So, be patient and wait for it or you can even call them and ask if they have a date. Check regularly here: https://sche.ap.gov.in/pgecet/UI/ImportantDates.aspx

Also, here: https://engineering.careers360.com/exams/ap-pgecet