My cousin also went through this phase. It doesn’t take long for them to figure out, “Hey, I scream/cry and I get picked up, fed, my diaper changed etc”. They learn that their cries get answered with some form of attention. My cousin eventually grew out of it, but the waiting can be a huge headache. I agree with the other moms in their advice, try distracting him with a toy or something. Once he learns that he will get the attention without the crying and screaming, he will see that it’s not as much fun as he though it was. Like everything at that age, you just have to wait it out. In the meantime, keep a stock pile of Tylenol. LOL.
Good Luck!!