"His father, Roger, and myself have been told that we should be spending as much time as possible with him and we should start making arrangements for his passing", his mother, Michelle Thompson Simard, wrote on a GoFundMe page earlier this month.
Artinyan said the family made a decision to "fast-forward" Christmas to give Jacob one last celebration.
CNN reports that Jacob's favourite things include Minecraft, Legos and Star Wars.
He's also a photographer, singer and comedian, according to his stepmother, Tara Artinyan. He has been fighting cancer since he was 5-years-old.
Christmas is coming just a little bit early this year for Jacob Thompson.
In response, his parents have made a decision to have their Christmas celebration early this year, and Jacob wants people to celebrate along with him by sending Christmas cards.
Neuroblastoma, the rare cancer that Jacob has, typically forms in nerve tissue such as in the neck, chest, abdomen or spine. "He was excited to see what people had to say and it just brightened his day".
And only five days after he announced his wish, he has already received more than 100 cards from people all over the country - and even beyond.
"We've got over a hundred, and they're from all over the world". His hospital room will be decorated with a tree and lights, and some fake snow and of course, Santa Claus will be there. "We have some from the Netherlands, from Australia, from Denmark", Aniyan said. "We've even heard from Antarctica".
Some have featured penguins, Jacob's favourite animal.
Jacob's mother said her son's motto is to "live like a penguin", which is to "be friendly, stand by each other, go the extra mile, jump into life and be cool".
To send a card to Jacob, use this address: Jacob Thompson c/o Maine Medical Centre, 22 Bramhall Street, Portland, ME 04102, USA.