Early NFL lines often shift a full point or more—think opener at -3 dropping to...

https://emilysgreatjournals.quantlynix.com/posts/is-it-dumb-to-bet-a-line-after-it-moves-from-3-to-4.5

Early NFL lines often shift a full point or more—think opener at -3 dropping to -4.5 by kickoff. Jumping in too soon means you’re paying inflated prices or missing sharper moves