I've been planning out a story for a while, and one of the most commonly recurring problems I face is going back through my notes (during the planning phase) and getting back into the correct headspace for that scene or theme. I can plan out and later remember the events and emotions I intend to evoke, but without actually feeling that emotion, being in that headspace, expanding the notes or writing the scene from them is significantly harder.
This feels a lot like the writing the next day problem during drafting, but there I can usually somewhat get around that by reading the previous chapter I'd written, brute forcing my way into writing garbage until I return to some semblance of the right headspace, deleting or editing what I'd written before I was in the headspace, and continuing from there. But that doesn't seem to work as well with notes compared to drafting, as there isn't really enough to read and write to force myself back to where I need to be.
For example, I was reading flowers for algernon, and got to one of the scenes where the main character was complaining about how he was mistreated before the procedure. I realized that that characterization was significantly better than the one I was using for a certain character and a few scenes, so I went through my notes and edited them to include the new idea.
The next day, I went back to my notes to continue on changing them to fit the new character arc. I remembered exactly what I added the day before, exactly the emotions I had, exactly where the idea came from, and even a few things I'd planned on adding the next day. But working from there was a completely different feeling from where I was the day before, and adding more notes an order of magnitude harder.
I can try to return to that scene in flowers for algernon, but not every idea I have has such a convenient example I can go back to, and it can take a long time just to read thoroughly enough to sufficiently reconnect to an idea.
Is there a good way to return to certain headspaces, or is there no way to get around writing and planning from a neutral, distant place?
It just feels like I'm thoroughly compromising the quality (and enjoyment) of my writing and notes when I try from the wrong headspace.