I give my 1 year old ready made formula when I'm out and about. Iv bought multiple amounts and stored them on top of my fridge. I'm a bit worried as I have a large window in my kitchen and although my kitchen isn't scorching hot the weather has been fairly bright and I have a good amount of sunlight coming. The boxes aren't in direct direct sunlight but I have a lot of sunlight coming through. I'm a bit worried about feeding them to my baby. Any advice would be great.