Fun thing with a high frequency online pollster like Morning Consult is you can see this flip literally occur because Donald Trump won the presidency.
And yes this happened in 2016 when Trump won. Consumer sentiment has a huge partisan bias component based on who is in the White House.
Both parties have this effect, but empirically Republicans have a much larger negative response to a Democratic president.
This explains a large chunk of why consumer sentiment is so far below the objective economic data. Not all of it of course, but a decent amount.