Stewy, I second ArtFriend in meeting your manager to get clarification. Flying blind is like walking through a mine field, blindfolded.
In the meantime, it sounds like you are working yourself into a panic. I've done that myself. Ultimately that leads to worse things because I try to do everything at once, and not very well, than focus on one thing at a time.
Pick your battles. Make a list. You know this one project needs doing next week. That is number one on the list. You have enlisted aid. Great! That will help. Write down the next thing that needs doing. What steps do you need to take to complete that? Then on to the next. Then relax. Take a walk. Deep breaths. Get up early and eat a good breakfast. Get to work early on Monday and get started.
You can do this.