I honestly think one of the things I'd suggest (and this is hard to make "tangible") is not to play hero ball. If KU gets momentum, play smart ball and quiet the crowd, don't force a bad three or a pass to the knees trying to catch up. Some of this comes with CFH using smart time outs here and there, but other times it is about the guys making smart passes, smart shots, knowing when to push the break vs pull back and run an offense.
That.....and make our free throws....especially on 1:1s.
Was listening to Jess Settles and Jake Sullivan last night - very informative. Jake was breaking down the game and Jess said (paraphrased) "Mind if I chime in? Do they plan to continue to play a one-pass-and-then-shoot-it offense like they have the last few games? If so, they will not keep it close." I thought that was a very valid point and fits well with your hero ball comment. We need to make them work as hard on defense as we are going to have to work.