Awareness may or may not affect the fade. Honestly I don't know either way. My TE's awareness is at 80 though.
He should already be a monster with the TE fade so upping those related attributes should be a low priority. But with TEs it never hurts to prioritize CIT.
Route running to 80 would help a lot. As he is right now I am guessing he is a monster on PA plays but if you want to use him effectively in all situations then yeah, boosting RTE to 80 should help.
People vary in how they call plays, and I generally play offline so take this with a grain of salt. From the 8 to about the 2 yard line is the ideal time for the fade (from the one just call a run or PA from goaline set). The safeties are your only concern (most of the time). If it is man coverage with 2 deep you should be fine.
Basically watch what the safeties do at the snap. If they move towards the sideline to cover their deep half the fade is there. If they come up for man coverage because of a blitz the fade should be open. But if one of them take the middle don't throw it. I don't think people call plays like that in the redzone (cover 3, cover one robber, etc) so you should be fine. The short answer is if the TE only has to beat a LB you should have a TD.
Hopefully this video on fades will help:
https://www.youtube.com/watch?v=NeouDAMxMuU
For TEs it should not be any different aside from the extra importance of reading the defense
Edit: This guy does it a little differently (tap vs bullet; plus he waits longer) but it would seem to be equally effective.
https://www.youtube.com/watch?v=8VU-9VWCf7s