Berklee Five Week Program - 2 years in a row?

Hi, my son just finished the singer-songwriter workshop at Berklee, and loved it so much. He’s a rising sophomore, and is already talking about going back next summer for the 5-week. Has anyone out there done five-weeks two years in a row (it seems from what I’ve read here that it’s helpful to do the five-week before senior year too as you can audiition for scholarship?). Would it be helpful for him to check out other programs such as NYU or Frost? He’s also doing GRAMMY Camp this summer (singer-songwriter) and seems that might be something to apply for again? Appreciate any information, thank you!