Hi S.,
I would not ignore your childs screams. I would exhaust all possibilities.... are there food allergies, is there an ear infection, are his clothes bothering him (some babies really are sensitive to synthetic materials), look for anything.
In addition, some babies JUST want to be near mom and dad. They NEED that reassurance that mom and dad are near. Why do anything that would make your little guy think mommy or daddy won't help me.
Also, when my daughter was 11 months old she went through a TERRIBLE month of TERRIBLE sleep. Which is really saying something because she was never a good sleeper. She too was waking up every 2 hours all night long. Come to find out, she GREW 1.5 inches in 2 months!!!!! My OB told me that there was a study done to examine how kids grow. Do they grow over a long period of time, or in big short bursts. They found, more often it is big short bursts. So, LITERALLY they can grow up to 1/4 inch OVER NIGHT!!! If MY body was stretching out like that while I was trying to sleep, I think I would have issues as well.
So, it literally could just be a growth spurt.
As I said, my daughter has never been a good sleeper. She was never one to just passively lie in her pack-n-play during the day and watch the mobile. She is a higly active, must be involved, sleep is for the weak kind of kid. Our first year was tough. But, I continued to gently show her night time is for sleeping, continued to meet her needs, and reassure her that I was there for her. I would do various things to help her get back to sleep after changing the wet diaper, or feeding her if she needed it. Now, at 16 months we are really turning a corner and getting into a GREAT sleep pattern.
Not all babies sleep through the night at the same age. And in my opinion, anyone who says differently is just trying to push kids into some kind of cookie cutter mold. All kids are different. All PEOPLE are different. My husband requires different amounts of sleep then I do...so how can I think that my daughter should be 'just like me'. In addition, I've had 35 years to learn how to put myself back to sleep, to learn what helps me relax and what does not. Our kids do not come equipped with these skills. We have to teach them. I, for one, do not like to cry myself to sleep, so that is not a skill I teach my daughter.
Be patient. Be gentle. This too shall pass.