Ltd and online course

I am currently on long term disability right now the date it ends is yet to be determined as I don’t have a physical injury my disability is an eating disorder. I want to take an online course however I would require a student loan as I am also trying to get a grant from the government through the college I would be attending and I am worried that I will be cut off from my Ltd, or be expected to go back to work or worst get cut off Ltd and fired, do I have any options? Ei ?