After winning the Premier League title last season, Liverpool currently sit in sixth place on the table.
Slot admits after so many changes over the summer, there was a belief that Liverpool could struggle for consistency.
"It was something we were aware of, in the back of our mind that that could happen with signing so many new players, but not something we or I was expecting," the Dutchman said.
"You always know if you let go of so many players and you bring in so many new players, it could mean transition is needed, but the expectations were not that we were having a season as we are having now.
"But for all the reasons that I don't want to bring up every single time we are here - it has become a season like that. And partly for a few percentage, that's also because we've made so many changes.
"But again, when we made them, we know in the back of our mind: ‘Okay, it could happen, but we didn't expect it'."