I know you started out small, and could fit anywhere, but you have grown a lot in the past 2 months. You are bigger than a cat now, and cannot fit through the cat door. Yes, your head still fits....and no matter which way you turn it, the rest of your body won't go through; chewing on the edge is not going to help. Neither is giving us sad puppy eyes, while sticking your head through the cat door..... your body still won't fit.
And next time I clean the patio door, could you please refrain for at least 30 minutes, of putting your dirty paws and wet nose marks on it... especially when we have company coming over. One day, I would actually like to see what clean glass looks like again.