Course deadline may not be met

I am facing some serious family issues due to which I was not able to pursue my course for the first 2 months after buying it. I still have one month left to complete the course and it's projects but I believe it may not be enough. What would happen if I am not able to complete the course on time ? Would I still be able to access the course and it's contents and submit the projects ? I request an increase of the deadline for completing the course. How can I do that ?