User blog comment:Eddienam/Question/@comment-12642484-20131226052602/@comment-32788838-20131226195938

That and it would lose its effect and atmosphere very quickly. A month leaves plenty of time for speculation, fan theory and attachment to characters. It also means less time for Isayama to do his planning and would probably result in lots and lots of filler like One Piece, Naruto and Bleach. Which is always bad.