Well, he did reach his highest score in approval rating yet a couple days ago, so there's that.
On the other hand, sings of a slowdown are showing up. Ironically, a hard Brexit like Trump is supporting could bring the world economy over the edge, bringing the slowdown and recession that could kill his chances for reelection...
That's why I slightly overstated his usual approval numbers, just in case.
It seems a slowdown is inevitable, the question being when it'll come, and whether the tax cuts it'll be charged back with interest, so to speak. Interesting comparison, over here we did have a president who cut taxes to boost a slowing economy and then got reelected... only to see it all come crashing down during her second term and get impeached.