The people are kind of bored with grandstanding government “shutdown” (keeping in mind that on average only about 10% of the government actually gets shutdown). Forcing a shutdown won’t help Trump at all. Also keep in mind that most of the government these days is on automatic budgets, that’s how we went like 4 years without even having a budget, so there is no “running out of money” section to this. And they can override the veto.
There will be no wall budget this year. They might still fight over it for weeks, but the end result has been decided.
Make them do it. Does Trump want to keep his support and go down fighting or does he just want to get the same old label the rest of the pubbies got. If his support turns on him then everyone will be laughing at him.