Please understand that every baby is different; your friend who just had a baby that screams constantly, 20 hours a day will be sitting there tearing her hair out and wishing he would just give her a break. There's absolutely no rulebook that says your baby should be exactly like hers, like every baby you saw in the movies, or like any baby you read about on the internet
- Generally, newborn babies do sleep a lot!
- Babies only really cry when there is something making them unhappy. At this age this is really only a small selection of things: hunger, temperature, tiredness, discomfort from clothing or internal pain. The absence of tears is normal
- Don't stimulate him to keep him awake constantly. He isn't supposed to have as much wake-time as an adult; he might sleep for 20 hours in every 24 because he needs to, and you're not doing yourself or him any favours by irritating him awake. Babies have NO ROUTINE at all when born, no concept of day and night, nothing runs to schedule. You typically have to wait around 3 months for patterns of behaviour and sleep schedules to emerge.
- He's not supposed to be animated; right now he knows nothing and everything is new to him. Everything in your room, your life, out your window that you take for granted, he has never seen, heard or smelled before. There's so much to look at and take in, that he can occupy nearly all his thinking time for hours with a slow moving black and white pattern. My child looks at the oven for half an hour sometimes; I've absolutely no idea what he's doing or thinking, but he seems to enjoy it
It sounds like you have a set of expectations as to what your baby should be doing; you might just have to throw all those away. No baby has ever popped out and started tap dancing. I have several friends with normal, happy, well adjusted and intelligent babies who would sit near motionless, staring across the room for long periods even as late as 3 months. It's not necessarily a sign that there's something wrong; you just have some way to go on your journey of learning about your baby and him about you (and the world)
If you have serious concerns about his health, speak to your local health care provider or its ancillary support services; as others have commented, no one on the internet can read a few words and give advice targeted to your situation. To purport to be able to do so is highly irresponsible.
Your healthcare provider should have already done a set of tests on your baby soon after he was born, hearing, sight, limb movement, hydration, blood oxygen, response to basic stimulus (the 'falling out of a tree' test) etc and they'll have told you if something was wrong. If your child was born into any kind of situation where these tests were not carried out, you should look to get them done. You mentioned doctors, so I'm sure the correct medical supervision was present during and shortly after birth
In general terms of looking after a 10 day old baby, your little one just needs feeding, keeping warm and being cuddled so he can develop a bond with his parents and feel safe and cared for. He can tap dance later; but go easy on it, and don't get into baby comparison competitions with other mums!