Mad_Cyril rarely does the 1st draft ever make the final recording.
Have you got a handful of tracks that are ‘nailed on’ to play yet? I’ve got 7, and am currently trying to find connectors (either before or after) for each of those. Sometimes get lucky and find a run of 3.
So long as you keep the original spine, the filler will come and go over the next few weeks as new stuff gets released or you remember old stuff. The hard part is making all of those sections work together.
Hope that helps more than my original comment 😆