Alec and Hilaria Baldwin Want 'Best Holiday' for Kids as They Spend Christmas in Hamptons: Source

Hilaria Baldwin/Instagram

Alec and Hilaria Baldwin are keeping their focus on family this Christmas.

A source tells PEOPLE that the couple will be "spending a quiet holiday with the children in the Hamptons" this year. Alec and Hilaria share six children: daughters Carmen Gabriela, 8, and María Lucía Victoria, 8 months, plus sons Rafael Thomas, 6, Leonardo Ángel Charles, 5, Romeo Alejandro David, 3, and Eduardo "Edu" Pao Lucas, 13 months.

"They love the holidays with their kids still being little. For Alec and Hilaria, seeing the joy in their children's eyes has been magical as they prep for Christmas," the source continues. "Their focus leading up to Christmas has been on the kids, decorating the tree, baking and spending quality time together."

"They want the kids to have the best holiday and are excited to see them open their presents," adds the insider.

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Hilaria Baldwin/Instagram

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Earlier this month, the family of eight went shopping together for a Christmas tree in New York City.

"We got a nyc Christmas tree 🎄. Possible holiday card photo??? We aren't all looking, but gang's all here, candy canes and all🍭" Hilaria captioned a family photo on Instagram.

The mom of six, 37, also documented the trip on her Instagram Story, sharing photos of her kids as they spent the day meeting their "tree friends."

One snap showed Alec posing with the tree as he carried it over his shoulder. "Alec felt manly," Hilaria wrote. "Swear this tree is 25 feet long and weighs 5 thousand pounds." They later decorated their tree at home, topping it with a gold star and elf.

Hilaria Baldwin/Instagram

Alec, 63, is currently involved in an investigation into the October death of cinematographer Halyna Hutchins, who died on the set of his film Rust when a prop gun Alec was holding went off, killing Hutchins.

Investigators issued a search warrant for Alec's phone in the latest development in the case, PEOPLE previously reported.

RELATED VIDEO: Alec Baldwin Says Wife Hilaria Gave Him 'a Reason to Live' After First Interview Since Rust Tragedy

As local authorities in New Mexico continue to investigate the tragic accident — with production on the film halted — a source told PEOPLE that Alec is leaning on his wife and kids, including 26-year-old daughter Ireland with ex Kim Basinger.

"It's such an unthinkable tragedy and the grief and trauma for him are unbearable," the source said. "Alec is still in shock and his heart is completely broken. He is doing his best to cope and is leaning on Hilaria and the kids for support."