Hello, ever since transitioning my three labs to pro plan 30/20 they ALL have been waking up with a white discharge from their eyes. Some days it's more then others. I know allergies (tree/grass/pollen) are super high this year in eastern PA. Haylees my oldest at almost 2 years old paws are pretty red in between them. Think I should wait it out and see if it's just seasonal allergies or try switching their food? Was thinking proplan 26/16 as some as the ingredients are different of their sensitive skin and stomach formula, orrrr go back to Canidae ALS or something like TOTW?