I'd also put him on Proplan, if it was me. The sensitive skin and stomach, which is branded as "Focus". If you don't want to do that, I'd find something NOT grain free. Just my opinion. There are some really good dog food blogs by people who are actually educated on dog nutrition that I follow and trust. The one I'd recommend is by Linda Case, who is a canine nutritionist - she has a master's degree in canine nutrition. https://thesciencedog.com/
Richter & Sypha
Glengate's Mountain Fortress CAA ORT L1E L1C NW2 L2V L2I ACT1 RATI SOG WAC
& Sirai's Golden Masquerade ORT L1V L1E L2C L2I NW2 RATI SOG TKN WAC
“You cannot get through a single day without having an impact on the world around you.
What you do makes a difference, and you have to decide what kind of difference you want to make.”
― Jane Goodall