You should consider going to student disability services. You can make a plan that might include additional time for you to complete assignments. If there is not a disability office try student services. Another option to is talk to the professors individually. In the US we have the ADA laws that protect people with a disability, a history of a disability or is considered to have a disability by requiring accommodations that do not change the nature of the course (less requirements, revised tests) but do cover things like extended time to complete assignments. I was a professor prior to going on disability and I always allowed accommodations.