Camp NaNoWriMo: Writing Fast?

In the past couple of days, my writing has slowed down to a little bit over 1,600 words per day, the regular average words-per-day for Camp NaNoWriMo. The reason being is that I have been writing all the planned parts of the story, the parts that I planned to happen, and I didn't know I'd get to the part where my main character ends up where the climax happens at only 20,000 out of 50,000 words, and I even began to get a bit tired of writing.

!!!!

What if this happens to you? What if your story is so fast-paced that you've gotten close the climax halfway through the novel? Do what I'm doing!

I'm making things up along the way. Creating a bit more suspense and tension. The next half of my novel, except probably the climax, will be a part that was never really written down. It'll be fun.

So, just a tip on what you can do.