Let me suggest something to address your whiplash.
There's a) Policy, b) Strategy, and c) Tactics.
I think Trump's policy has been constant: "We win, they lose".
His strategy is his approach to that policy, and it's been pretty consistent: "Get them to do what we want them to do".
His tactics are how he implements his strategy. Those tactics can change, even daily -- that's how "tactics" are categorically different from "strategy" or "policy". So if the tactics seem somewhat chaotic, well, that's sometimes necessary. They need to adapt to changing circumstances.
I hope that helps.
The problem with such tactics when it comes to FP is no one knows which statements to take seriously, which in some cases can be quite dangerous. And eventually, none are taken seriously. Not the best tactic, IMO, if that’s what it really is as opposed to Trump actually changing his mind all the time.
He’s done some great things domestically, and I am very happy with him there.