Welcome to YT and Congratulations on your new baby!
Wow...you do have your hands full. As you have already stated, this baby should still be with its mom and littermates until at least 12 weeks. Pups that age do tend to sleep quite often. Please read the link Gemy attached to her post. There is a lot of information. That you will need to know. I'm sure that other members and breeders will join in soon to give you helpful and great advice. Please be a sponge and take it all in. This community is all about the betterment of the yorkie breed. You will be given very valuable advice and direction. I can not say it enough that you should take everything in.
I wish you nothing but the best with Oliver. Looking forward to seeing pictures soon.