Like I said before last week's game, need penetration a couple steps in the backfield to make Cobb have to make an early stop and start, dont let him get up to speed,
Davis and LTP and other tackles need to penetrate and clog things up at the same time by demanding at least one double team.
Outside backers or the DEnds depending on how they line up need to hold the edge but get at least a yard in the backfield to make the runner veer deeper.
And as you say , tackle, tackle at the waist or legs and not up high on the shoulders, wrap up instead of just a body block tackle.
Go get them defense