Definitely possible. Keep up the motivation levels and you should be fine. And remember, don't change horses midstream, play to your hot streaks, and if things aren't happening do something completely different (like some exercise or going for a coffee with someone) and then come back to it!
The first couple of chapters took me quite a while, but once I got into the swing of things I was getting a first draft done in a fortnight.
Good luck. (up)