I third that motion! Do it in 20-30 min increments. YOU CAN DO THIS!!! I know it seems like an impossible task right now but break it down into small managable goals. I psych myself out and end up getting nothing done sometimes because the project seems too big to handle. Make it smaller. Do it in sections, make small goals, and reward yourself each step of the way! Set the timer so you HAVE to stop within the 20 or 30 minutes for a break then go back so you don't get overwhelmed and burnt out.
GO GO GO!!!