Mouth issues?

Hi!

I just acquired a misplaced baby grey squirrel from the hurricane. Not exactly sure how old it is but I believe around 7ish weeks. Eyes and ears open, underside of the tail is completely furred. Was very dehydrated. Weighing 82g this morning. He’s not able to attach to a nipple. Not sure if it’s because his teeth are too long? Does anyone see anything concerning with the structure of his teeth/mouth? Thanks!