You are either incredibly new, or a shill.
Here let me poke some holes in that narrative you're inflating.
What has drawn crowds to trump from the start is that he speaks the truth. When you script this shit, it doesnt sound like the truth, it sounds fake, forced, like hes giving canned responses. This is the shit that his followers despise, because even if its not dishonest, its not genuine, it reeks of try hard. It tanked Rubio hard, and people have mocked Obama for nearly a decade for it.
Further, do you not think the media would immediately latch on to that and do everything to tear into him on it? "trump now goes on a script! he needs handlers to keep him from fucking up! hes not being honest or himself anymore! hes no longer the brash in your face trump you know and love!" They'd do ANYTHING, SAY anything they could about it. And it would blow back on him hard.
As for "starving them," you dont seem to realize that this stuff is actually in general good press for him. Bad press from a dishonest, distrusted, disliked press, is actually GOOD press. The more this happens, the more he shows them for the hacks they are, shows their bias, shows their bullshit for all to see, and the more people become numb to it when they realize the media is playing this shit up (for the normie bunch who still even listen to them at all).
Meanwhile, they're hearing NOTHING about Killary other than "muh polls are up! shes winning!" Meanwhile Trump at rallies hammers and hammers her, he hits her on social media, messages and memes spread far and wide and FAST.
For him to change any of that, would fuck him over. the media would have a field MONTH with it. They'd claim hes "gone soft," that hes "no longer being honest" that hes "still evil! hes just scripting himself so he doesnt sound as bad!" and so on and so forth. And THAT people might believe.
So no, doing what you suggested would not help him. It would hurt him. It would give the media credibility, and sway voters. The way hes doing it now, shows how dishonest and biased they are, because ALL they talk about is him, and blow out of proportion what he says.
Look at the Russia shit. You think anyone gave a crap? they ran with that shit for.. what was it? two weeks? Until the iran money from obama came up, then they IMMEDIATELY dropped the cycle on russia, since iran is a russian ally.
The more this shit happens, the better for Trump. Is he feeding them? Should he starve them? No to both. He's giving them the rope they are hanging themselves with son.