Visa extension X2 and student residence permit

Hi,

My partner and I are both studying Chinese in Hainan. He holds an X2 student and I have a student residence permit, both expire 31st of July. Since we are both in the process of finding a job now, we need some more time in China. I read that its possible to extend 2 times 1 month (change to L visa), is this also possible in our case? If yes, how long would that take? Thanks!