First of all breath, is there someone not on the internet that you can speak to, a tutor, teacher, parent or friend?
Second- can you collect all the information on what you need to do and use a Callander to backtrack to now what you will have to get done each week so that you can have a clear understanding/expectations for what needs to be done.
Personally I would mindmap/ spaff info on a page then use colour codes to figure out what is the most time-consuming tasks order them into importance/time taken and see what help you can get from external sources, what you can do your self and what may need to be dropped (if appropriate) This may be intimidating to start off with but i find if you can work on what ever you have to do chunk by chunk it helps with avoiding feeling so overwhelmed.