Trump or Melania shouldn't have never been there in the first place, it was nothing but a den of vipers that would hiss with glee if both were shot on live TV
This is tough, because while people are probably advising him otherwise some of this is because he WANTS to be in front of people. He wants his messaging out there and he wants to deliver it. He also doesn't mind to get in front of people on the other side.
If he sits everything out and they silence him, THEY win. THEY don't want anyone hearing his messages or how things they need to be bad, are actually doing well. They don't want him talking about a bright future.
Several of the guest analysts/commentators I saw over the weekend all said this is a bit of a conundrum, because he doesn't want domestic terrorists dictating his schedule and agenda.