Hi 29200
I'm sorry you feel down- I felt down as well during my first year as I struggled to narrow down my topic. I don't know what's your field, but here's what I'd do:
1. If you feel your topic is too broad now, consider performing a case study. In social sciences, for example, if you're briefly looking at topic X, try to examine X in the context of a country Y, or a specific time period across a panel of countries.
2. In the nat sciences I'm sure there'd be ways of taking an existing theoretical framework and applying to another situation.
Otherwise, try to read on a related topic that can be narrowed down more and for which you can actually find data (I cannot emphasise that latter point more emphatically). As for speed, set yourself deadlines and don't break them!! Wish I knew more about your topic I could've been more specific