A.J.
There's a wide definition of what counts as 'sleeping through the night' but typically if they can go a 6-8 hour stretch without waking, then it counts. So YAY for you!
I would say you are right on track...both my kids were down to about 1 feeding at this time too (usually between 4-5 am). While it can be a pain in the butt...hang onto this feeding for at least another month or so as it can help them sleep in a little longer. By 10-12 months old most kids can sleep 11-12 hours a night without a feeding. Sounds like you're doing great!