Bout to lose my fucking shit

People lie!! When u have a newborn that wakes through the night people say they sleep better and it gets easier when they’re a toddler. They lie! My 3 year old has woke up through the night like a new born his whole life!!!!! No matter what I try. He goes to bed full, he has all his vitamins, I keep a fan on. Everything. Nothing works. I’m so sleep deprived. It’s constant waking and crying waking and crying.