Stryker2018

Hello! Need help and guidance with my situation.... I got Family based green card in 2003 through my uncle who sponsored my parents and me. I stayed in US for about a year and had to come back to India to complete my studies and other financial reasons. In 2007, i applied for tourist visa and travelled multiple times to US to visit my uncles family. i have now completed my studies and would like to return to US on resident visa. How do i reinstate my green card if it was abandoned? I had just applied I-90 form and they scheduled my biometric fingerprinting appointment but after reading through some forums i am confused on the process. can someone help and guide on what i should do? Also, how long does the process usually takes? Thanks in Advance!