It's supposed to only take 2 years...BUT...
At my school (community college) they tell me that there's a 4-5 quarter wait list to get into the program. On the other hand, a friend of mine who's in my chemistry class knows a girl who just got accepted into the program after only 2 quarters, so who knows. I'm working on my chem pre-req & will be able to then take the pre-admission exam. After that, it's wait, wait wait.
One of the advisors said that I "might" be accepted before some folks because a lot of my classes transferred from my bachelors degree, so here's hoping.
But really, it doesn't bother me that it may take longer to get in. I'm going part-time at the moment & working full-time, so dedicating the quarter to around 2 classes isn't so bad. It gives me more time to concentrate on those classes & hopefully get better grades!