Hi, thanks for posting and glad you found us. Our babies woke frequently through the night, (we have 6 kids) especially when they were very little, but my youngest is almost 3 years old now and sleeps all night long, as long as he knows I'm nearby. My babies were on the 2 hour schedule at night too, sometimes sooner, sometimes longer, and almost always for a feeding or diaper change or pottying (we used ec with our last baby) then back to bed.
I'd say around 4 months or so they would sleep for longer periods but there were time even when they were much older that they would have periods with more night wakings or feedings. Things like teething or colds and such disrupt things.