Hi, I read today that I could give my 7 month o...

Hi, I read today that I could give my 7 month old cheese, so I did as I'm wanting to broaden his palate. I gave it to him about 3pm (would normally try a new food in the morning) and he has been hyper all evening! Normally asleep by 6:30pm, but just got him to sleep at 8:30pm. He fought it all the way. Could this be linked to the cheese or do you think it is purely coincidental and that tonight would have been a challenge anyway? He normally goes down problem free. Thanks :)