On July 4, they raised $3.7 million.
On August 23, 7 weeks later, or 49 days, at $75,510 per day, they raised $1,279,885.
So given that most recent spend rate, at $75,510 per day, that gives them 16 days, or until around September 8. And an approximate burn rate of $2.3 million - closer to what you suggest. :)