Is it possible?

I am entering the third and final year of my degree. Up until this point I have not taken out the maintenance loan as the grant has been enough to keep me going.
I have already sent off my application for this year, and have not requested the loan option.

However, around the the third week of September there is a possibility that circumstances may change for me, and I may well have to take out the loan.

My question is, will I be able to apply for the loan at that point, even though I have already been approved for this years finance.

Thanks in advance.