i dont know the exact time line. i left my letters at my girlfriends house, ill pick them up later. i applied for DACA around the mid june. got a notification that they received my application around 3 weeks after that. around beginning of september i received a letter stating i was missing proof i was here years 08,09,11,12. I sent everything i found for those years. last month mid, 2 weeks ago i received another letter stating they couldn't go further with my application because i lacked proof that i was here june 15th 2012.