L.T.
S.,
My son, who is now 20 months old, did the same thing. He started not sleeping all night at about 12 months. He would wake up 2-3 times a night for several months. Is your son teething? My son would get one tooth in, only to start on another. He got a mouthful of teeth in about 5 months. We gave him Tylenol sometimes, which helped. He would at least sleep until the Tylenol wore off. If he's not teething, try putting a sippy cup of water in bed with him at night. I tried that about a month ago and my son has been sleeping all night ever since. He would wake up and yell for milk. So, instead of me waking up and going down stairs to get it for him, I finally put water in bed with him. I don't think he drinks a lot of it at night, some nights he doesn't drink any, but it has sure helped him and me sleep!!!
Hope that helps!
L.