DD is nearly 8 months old and has always slept pretty damn well. Her naps used to be crappy but I will take a long night of sleep over a nap any day! At 8 months though, she is sleeping a total of 16-17 hours a day.

She goes to bed at 7 pm (8 if we are behind schedule),
Wakes around midnight to eat every now and then (or I do a dream feed because I am too lazy to pump)
Sleeps until 6-7 and wakes to eat again, I lay her back down
Sleeps until 9-10 am (See? Lucky!)
Takes two 1 hour naps at 12ish and 3ish.

So, in total she sleeps about 14-15 hours a night with two 1-hour naps.

I expected this of a younger baby but not at 8 months. She isn't crawling or even scooting yet. She can get on her knees but only does it in her bed. She can spin around on her tummy and rolls just fine. She can sit unassisted just fine but cant pull herself into the position but has also started working on pulling to standing. She can stand while holding into something completely unassisted. She has even managed to use only one hand to balance while playing with things with the other. It seems like her physical development is all over the place and I wonder if this is all just normal or is she is getting too much sleep and not enough developmental awake time.

Am I crazy and just need to shut up because of how lucky I am or should I be concerned?