Any baby’s referred to speech therapy ...

So my baby just turned 1 last week he isn’t saying any words no dada or mama he just screams 😆 so his doctor today referred him to get some help for his expressive speech (also my oldest daughter she is 7 and she goes to speech therapy )so the doctor said it’ll be safer to start now than later just to be safe, anyways it broke my heart my little baby boy is so little and seeing him struggle already breaks me and I know how much my older daughter struggles and I don’t want him to go through the same thing 😔 any advice or is any most going through the same thing ... also I don’t know if it’s speech therapy or what it’s called at his age