Early NFL lines often shift a full point or more—from -3 to -4.5, say—once...

https://casinocrowd.com/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—from -3 to -4.5, say—once sharper money comes in. Jumping on those opening numbers can cost you value. The key takeaway? Patience pays off; waiting for the close often means better prices and smarter bets.