Everyone's situation is different. My son did travel ball from 11U-13U. Once he hit high school, we actually played legion his 14 and 15 seasons. Our thinking was, he was a slow grower and based on his measurables, we was not going to wow any college coaches. Even though he won the "Golden Arm" award on his 13U travel team and lettered as a Sophomore. Plus, I was going to save money.
We went back to travel ball the summer after his junior year to showcase. He received multiple D1 offers.
Now, a college coach asking for a 2022 summer schedule seems like a great first step. Maybe your son is already a bigger kid and has promising measurable and has the potential to be offered early? I think it's important to understand realistically where your son is and where he will project to be, to help you decide which team to join. I'm not familiar with teams in GA, but others might.