In the YorkieTalk.com FAQs, you can get instructions how to read the puppy weight chart. Remember it is just an estimate:
http://yorkietalk.com/forums/showthr...3440#post63440 http://yorkietalk.com/forums/showthr...686#post205686
I agree, I think your pup will be about 6 lbs. My pup is 2 lbs at 8 weeks old, so I'm also guessing he will be about 6 lbs.
Try to find something that weighs approximately 7 lbs and carry it around for a bit. It might give you a good idea of how heavy he will be, which is still quite bearable compared to a larger-sized dog.
Also, having a Yorkie weigh between 4-7 lbs is a good advantage compared to much smaller ones because they aren't as susceptible to genetic diseases. But I agree with everyone here - you'll most likely have a 6 lbs baby. =) Congrats!