my little one is 6 months and 1 week.. she is also 2.8 pounds. The only thing i think is different is that I had to buy a lot of steps for around the house .. the couches chairs, and a huge one for the bed that was very expensive. But it is worth it as she is getting into a "jumping" faze that is scaring me to death. I am worried she will break a leg.
It is weird because everyone else thinks she is sooo tiny and little.. but because i look at her all the time, she doesnt seem so tiny to me.

she has a sturdy lil frame on her, which is good. she is not a "fragile" underweight/ skinny little boney puppy at all.
I am just worried about anesthesia... the little ones can react badly to it. are you getting your one spayed soon? 7 months is around that time. I set up an appointment today to get pebbles spayed next friday... I am so scared