2 Quotes by Emily St. John. Mandel

It isn't his fault that his days are so similar that he keeps sliding into memories, or into the counterlife, although it is troubling that his memories and the counterlife have started blurring together.

But no, that's memory, not the counterlife. Vincent isn't in the counterlife. He feels it's important to keep the two separate, memory vs. counterlife, but he's been finding the separation increasingly difficult. It's a permeable border.