Combined Canada-BC student loans repayment period

I did a consumer proposal 5 years ago, and just finished paying my proposal off. My student loan was not included as it was less than 7 years. Obviously since I had to consolidate debt, I can’t afford high payments for student loans. We have 0% interest on student loans, and I want to go for the maximum term for repayment which I believe is 14.5 years. Problem is my income is on the higher side (I’m a casual with no benefits, but I also rent in an expensive city).

Is there an income limit for extending your repayment length? My loan has $12,500 left on it