Co-creator Steve Holland spoke to TVLine about the episode and explained why Iain Armitage wasn't brought back despite the holiday being a perfect opportunity to do so. While it might've made sense for the character to return on the first Thanksgiving since his father died, Holland noted it didn't work well with the story they were trying to tell:

Georgie & Mandy’s First Marriage examined the ups and downs of a family Thanksgiving in its latest episode, which saw the McAllisters and Coopers come together in the aftermath of George Sr.’s ( Lance Barber) loss.

It turns out that all of that speculation about the truck Georgie Cooper (Montana Jordan) has been driving during "Georgie & Mandy's First Marriage" is completely true. That is George Cooper Sr.'s (Lance Barber) truck that he's using.

Georgie and Mandy’s First Marriage' has found ways to include 'Young Sheldon' Easter eggs and guest stars from 'The Big Bang Theory' prequel

Georgie & Mandy’s First Marriage is gearing up for its first holiday as the McAllisters and Coopers attempt to come together for Thanksgiving in the episode airing on November 14.

Georgie & Mandy’s First Marriage has already aired a few episodes of its first season, which was recently picked up for a full season order at CBS, and as fans have seen, George Sr.’s ( Lance Barber) death has been a prevalent recurring theme throughout.

A brand new still from Georgie & Mandy's First Marriage reveals the Cooper family gathering for the first time since Young Sheldon ended.

"Todd's Mom" challenged Georgie to do youthful activities. Here's a look at the events of Georgie and Mandy's First Marriage season 1, episode 4.