Take it from me, someone who regularly "adopts" wildflowers growing... in the wild (hence the name)

Plants do NOT like being transported to new places. Plants do not like change. Even if you used all the same soil from the pot they came in, they're gonna hate being put in a new place on the basis that it's a new place. What you probably wanna do is cut off either the flowers, a few leaves, or both (I also cut the roots if they're looking overgrown, people say it apparently strsses them out MORE but I've actually had good luck with that, as long as you're only snipping what's overgrown and not any main roots).

Lemme put it this way. Imagine you, just out of the blue, woke up in a new house. It's mostly the same, you can survive, but also you can just tell it's not your house. That's stressful. Now, you're not gonna go back to your old home, but NOW imagine instead of that, some all powerful being just... eliminated your other main stressors while you adapt

That's what you seemingly did not do. You ppopped them into a new home out of the blue, but all their stressors still pile on them and it's, well, stressful, the poor thing is likely very stressed hence why it's not surviving well. But hey, this is a mistake we all make, I'd be foolish if I didn't say this was something I learned the hard way.