Hello and welcome to you both
As with 'people', I think feeding our pups the most totally nutritious food available is probably the most important thing we can do - it shows in their hair, eyes, teeth, frame, demeanour - everything.
Switching food CAN be a problem - I sprinkled a little grated parmesan cheese on Harry's and that worked for a while...then some (fresh) warmed chicken stock and that worked for a while....
- on and on it went....
In the end, he just got used to his kibble (our personal preference is Royal Canin - but you'll get loads of different opinions!!
)...I wish you loads of luck with your gorgeous little boy