hi,
since the purpose of the course is to teach you the theory and help you integrate it, i would simply suggest going on. unless ofcourse you've forgotten some of the theory and wish to refresh it. anyway i recommend doing a second pass of the course after finishing it ,so again i would suggest that you would continue doing it at this time. it helped me alot anyway. again,the main purpose of the exercises is to teach you the time constrains and get the moral of each exercise.
so, it's your choice. you can and will get the success later.
hope i helped you.
Raanan Hadar