Experienced Moms please (sick baby)

Hi fellow Moms,

My son is 10 months old, had the 2nd dose of his flu shot Friday morning. Friday around dinner time he vomited everywhere in the middle of eating squash. (Hasn't eaten anything new lately.) Saturday night after his last bottle of the day he vomited SO much, all over both of us. He hasn't had much of an appetite for solids but has done fine with breastfeeding and formula. Called pedi and nurse said pedialyte in between feedings and keep it bland. In the meantime he is napping off and on. Is there anything else I can do for him? He hasn't vomited so far today, slept through the night fine. Any tips on how to care for my little guy aside from what I'm doing? Thank you!