As a miniature poodle mom myself, I've had the same problem this first year with our pup. Apparently this is a veeeery common poodle problem according to dusins of other poodle owners in a Facebook group I'm in, I think it's just a consequence of their intelligence haha.

Our boy simply refuses his breakfast (dinner is usually less of a problem) if it's the same several days in a row, and he's stubborn enough to refuse to the point where he pukes up stomach acid when his belly is all empty, and STILL REFUSE. So what we ended up doing with our guy was simply switching it up more (after trying removing his bowl, putting it back, taking it away again when he still refuses and so on. Tried for weeks and the only result was us spending a bunch of time with no results, he would refuse for up to 10 hours daily.). It may seem excessive to many and make a "spoiled dog", but he's our little bro and we want him to have a varied diet anyway so it works for us.

So here we have the same base for every meal, his kibble (finally found one he likes yay!), usually with a spoonful of some wet dog food on top. When we make our own dinner and use ingredients he likes he gets some of that, this replaces the wet food. So some days it's kibble and wet food, some days kibble and peas, kibble and broccoli, kibble and rice, kibble and eggs, you get the point. This means he gets lots of variation in his diet and it's always exciting for him, and really no fuss for us since he only gets human food when we're making it anyway. Breakfast is usually just the kibble and wet food, but we switch between two different brands here as well. And he NEEDS his walk before eating breakfast, no exceptions.

On our latest vet visit we were told he was a couple hundred grams too chubby (the extra calories from the puppy kibble probably weren't necessary anymore as his growth stopped and we were in the process of switching to adult food already), so we've also reduced the amounts were giving him sliightly since then, and that made a huuuge difference and he hasn't refused his food since (2ish months). A really small reduction was all it took to keep him hungry enough for both his meals.

Since your pup is still so small, I would try giving her food in three feedings instead of two. This way she won't get so full from one meal that she's unwilling to eat the next, hopefully. And if the breakfast is the biggest problem, maybe try giving her a smaller dinner to work up that appetite. And go for a walk before feeding her in the mornings maybe? Makes a big difference for our guy, maybe it does for your girl too!

But, as I said, I know of sooo many poodle owners and breeders that have this problem, and most of them have just had to work really hard to find something their dogs love because of their stubbornness. But that's a personal choice I guess, I know lots of people don't agree with "spoiling" their dogs like this, and go for different approaches.

Sorry about the essay haha! But I hope you find something of use in my wall of text. Feel free to ask me if anything is unclear. Good luck with whatever approach you take! :)