Maybe it is better to write quality content and update more seldom ? Just make sure to submit to stumbleupon, reddit, deicious etc to attract visitors and hopefully get them to back-link to you ?
I don't think you should worry about the traffic, keep updating new content and also do some optimization, you traffic will be back soon. Also you can start promoting through Face book or Twitter this create strong community + traffic.
Once a week, you should update your site. With blogging, social bookmarking, article writing and link exchange you should increase off-page optimization.