Hi!
I am in the exact same situation...except our baby is due in November. we used "Toliet Training in Less Than a Day" by Nathan Azrin and Richard Foxx.
I used the book as a guideline and then winged part of it. We had a "Bye Bye Diapers" party on a specific morning. Then put on training pants and played in the kitchen (for easy clean up) all morning/early afternoon. That whole time I provided some salty snacks and fun drinks (smoothies/juices/etc) so he pretty much had to go every 45 minutes (or less sometimes). We practiced all morning pulling down pants, going to the potty, pulling up pants, and putting his pee-pee/poo-poo into the pottty then flushing. We also played and practiced with a doll so he always new what what was expected of him.
Patience was key on this day! As he wasn't always wanting to pay attention to instructions or play with the doll. But I was prepared to bring him back to the subject whether he was playing with cars or the doll.
From that day on we didn't use diapers except at night-time (sleepy diapers we call them). He's about 6 accidents in the last month...and most of those were in the first week b/c he was getting the timing down and learning to pull his pants down by himself. I do have to help him still with the pants...depending on the pants.
So that is what worked for us... Hope it helps a little!
Best of luck -
CJ