Two manuscripts and so little time ...

I may just have written myself into a corner, so to speak.
I have comitted myself to finish a manuscript by mid February, and another by March 15.  And that's not very much time ...
For some reason dates that are more than a week away, always seems so far, far away. Like it's never going to happen, and there's an infinite number of days ahead of me.
It was the same way in school. Exams? I didn't have to study for this exam or finish that paper now! I had so many other interesting things to do, so usually I'd forget about it. Until about a week before, or in most cases, the night before - I'd suddenly remember, work like possessed and sort of slide through it. (I wasn't much of a scholar, I'm afraid).
Of course, I can't do that anymore. For one thing I'd starve to death... and the publisher wouldn't be very pleased. And also I love finishing a book. There's just no better feeling.
I actually have to work pretty hard every day to finish, and since two manuscripts is a bit much, I'm worried.
The only way to manage the deadlines, is to work everyday. Which I do. But there is only so much you can do in one day.
The first manuscript is the second book in a new series. I have a contract for that, the first book has been approved, and I should have finished this manuscript by now. At least a first draft. And I'm halfway. I'll get it ready, I'm sure of it. This is the 13th book I'm writing in this genre, so it's not like I don't know what I'm doing. (or at least pretend I know).
The second is a new thriller, and I want to finish it so badly, I can't sleep. Anan has been rewriting and doing extra research on it for a couple of months, and now it's my turn to work on it. A first draft has been completed, it's just not good enough yet. There are so many holes in the story, it's not fit for editorial eyes.
We have been working on it for years, and we are way past the point of no return.
Deadline is looming ...