Early NFL lines often shift a full point or more, like a favorite opening at -3...

https://judahsexcellentthoughtss.yousher.com/should-i-bet-a-team-because-i-picked-them-to-make-the-playoffs

Early NFL lines often shift a full point or more, like a favorite opening at -3 and closing at -4.5. Chasing these early numbers usually means losing value