Eren stopped caring about Levi long before Levi could even begin caring about him.
That's why he didn't give Levi a Paths talk.
Everyone else got a Paths talk only when they were Eren's friend from the 104th group. Mikasa, Armin. Jean. Connie.
Even someone as toxic as Reiner and Annie got one. Connie accused him of being callous about Sasha, and Eren pulled him in the Paths. Jean fought him and Eren pulled him. Reiner and Annie led the Titans to Carla and Eren accepted them.
Levi? He wasn't part of that old group. No matter what potential that could've existed, Eren shut the door on that long ago.
In the moment of Eren's monstrosity, only a select few were allowed to see the man still underneath. They were the peers of 104th, who he couldn't let go. No matter how much they hurt him and everyone. No matter how unhealthy, they formed the most visceral, intimate, and instinctively responding part of the pre-Rumbling Eren.
Levi wasn't that.
No, Pieck, you couldn't have. You weren't part of Eren's most humane days. Only ten people were: Carla, Mikasa, Armin, Hannes, Jean, Connie, Sasha, Reiner, Annie, Historia.