The way Dina holds her phone during her ultrasound changes from shot to shot.
When Mateo is admitting to Jonah that Jeff doesn't work at Target, Mateo's hands go from folded in front of him to down by his sides and back between shots.
The handwriting on the "Sex w/ Amy" board changes between when Cheyenne first writes it and when Elias is shown adding his name to the list.
After kissing Jonah, Amy puts her hands in her coat pockets. When it switches to a wide shot, suddenly her arms are down by her sides.
Jeff says he will pay for the hiking gear out of his savings. Earlier, Mateo said that Jeff's phone service was cut off due to lack of payment.
Amy said that she almost had sex with Tate but he started doing one armed push-ups, fell, got embarrassed, and left. This would mean that they nearly hooked up at Amy's house. This contradicts how it was played in Groundhog Day (2018), where Tate said he was satisfied by the encounter while Amy said she'd thrown up in her driveway when she got home, something of which Tate was unaware. If the (near) hook-up occurred at Amy's house, Tate would have known what Amy did when she got home.
When Cheyenne is implying to Amy and Dina that giving birth was a painful and traumatic ordeal for her, while Amy tries to downplay it for Dina's benefit, no one points out that Cheyenne gave birth in the store and thus her birthing experience was much different than a hospital birth.
While discussing her expected independence, Amy says that "Emma's almost out of the house." Emma is 14 years old. It would be nearly 4 years before she would be out of the house.
Marcus's Ronald Reagan impression is actually Richard Nixon.