Could Jay Have Fabricated Statements Designed To Keep Focus On Adnan As The Killer?

Despite having joined this sub 5 years ago, I don't have the full encyclopedic knowledge of this case like many others here do. Sometimes I even go back and read some of my older posts and discover that I had written about details of this case that I now have completely forgotten - I think my insights into this case were stronger 5 years ago than they are now. And I think it boils down to me now experiencing fatigue with this case.

But one last thing that does still nag at me is my inclination to believe Adnan did not plan to kill Hae, but did plan to win her back. I just don't see much of a "plan" in how Adnan murdered her.

I realize that Jay had made some statements that Adnan had been asking him, days leading up to the murder, about how to hide a body. And that Jenn Pusateri had also said that Jay relayed similar things to her. So, how could that be explained if Adnan was not in fact planning to kill Hae? I offer this:

Very quickly after Jay helps Adnan that night, and has time to reflect on this nightmare that he has been dragged into, Jay realizes that he just participated in something very bad, even though he didn't kill her. And he also realizes (when talking to both Jen and then the police) that he will be suspected of participating in the murder, so he adds a little something to the story, in attempt to make sure that people keep their suspicions on Adnan and not himself. He fabricates the part about Adnan having spoken about killing Hae and hiding her body days prior to the murder.

Am I reaching in offering this? Perhaps.

But for me, at this time, to believe that Adnan had actually planned the murder is more of a reach.

For context, the above relates to this post I made 5 years ago, titled ADNAN: A desperate conversation was planned. Murder was not.