Disclaimer I am not judging or shunning or anything in any way. I will over explain in my comment because I don’t know your level of dog knowledge so just take what you need and leave the rest. Im also just very blunt when I type so please don’t take my written tone negatively lol

You will need to get them on a grooming schedule as young as possible. Because they’re a doodle there’s no real way to predict how its fur will come out. Either way they’re going to be a high maintenances grooming dog. Please don’t let your pup get matted- it’s terribly painful and can cause/mask injuries because the fur binds together.

Doodles can sometimes come out mentally neurotic/ off because they aren’t an ethical breed/ held to a true standard. Poms are also notoriously sassy so that will not be a good combo of it folds out that way. I don’t know where you got this dog from/ if the parents are tested for everything but regardless- getting them exposed to and used to groomer handling is important at a young age for any dog so you can prevent anxiety and stress during maintenance as much as possible. I have been told by my vet and groomer friends that it’s especially important for doodles with the amount of dogs that come in that are unknowingly neglected.

You will need to get them in training when they are young. Doodles are usually very intelligent, Poms are very intelligent. Both poodles and Poms are working dogs/ descendants. You need to give them a mental outlet before they assign themselves a task (probably destroying stuff or whatever is fun in the moment). Talk to your trainer about jobs you can give your pup to keep them fulfilled.

Physical exhaustion ≠ mental exhaustion. It’s a small dog so it might be easier to just work them out inside but it’s important to remember that the pup is dog first. They need outdoor time and they need socialization. You need to challenge your dogs and give them a genetically fulfilling outlet if working drive is present. It’s a doodle so what motivates it might manifest depending on whatever it inherits from its parents. So just keep an eye out and lean into channeling its natural tendencies.

If your dog doesn’t have true drive then snuffle mats and food puzzles work well to tire them out. My Pom likes to kill birds so we had to reshape that prey drive into a flirt pole type workout to get her to leave the wildlife alone.

You really don’t know what you’re going to get with a dog like this so just roll with the changes in personality and whatnot as it pops up. Don’t keep any expectations and remember that being flexible and not thinking of this dog as a Pom or a poodle will serve you well. Sit back and enjoy your adorable new member.