No, it won’t take a couple of centuries to happen, you misread. The collapse will most likely happen before 2050 according to new research which speeds up the timeline on the old research. The various environmental fields do actually agree on this and it’s accepted.

The impacts of an AMOC collapse would leave parts of the world unrecognizable.

In the decades after a collapse, Arctic ice would start creeping south, and after 100 years, would extend all the way down to the southern coast of England. Europe’s average temperature would plunge, as would North America’s – including parts of the US. The Amazon rainforest would see a complete reversal in its seasons; the current dry season would become the rainy months, and vice versa.

That means the collapse will happen, with immediate consequences as well as consequences that won’t stabilize for over 100 years, not taking into account other destabilizing forces. Like can you read?