Board Thread:Manga/@comment-4161372-20170215201519

I was wondering if it can be done. I mean Grisha ate Kruger and Frieda too, so now there are only 8 titans left out of 9. So Eren contains the power of 2 titans. Does this mean that he live longer? Or is it possible to "awaken" Ymir by concentrating the 9 power into one titan? Then Eren has to eat Armin too :( 