Agreed, don't wait for 1.50 and selling would not be a good call. Average down if you believe the story, which is hard not too. If you don't purchase more, than sit tight, your purchase at 2.11 was not incorrect, just because we have a little profit taking.
Track is right, trading this is missing a few good days, and getting back in with less shares.
This is a significant story in a great sector of the market. It is their time, so sit back and enjoy.