Transitioning infant (3mo) to crib from basinet

Our daughter just started daycare, and we’re trying to work out how to get her more comfortable sleeping in a crib. She sleeps super well in her basinet at home – up to 8 hours actually, and in fact she’d probably go longer except that we wake her up to feed her. But in the crib, at home or at BH, she rarely sleeps much more than an hour. I don’t think it’s just because it’s daytime and it’s a nap versus night sleep.

We do swaddle her, and have tried leaving an arm out because she’s starting to suck her fingers. I’m think maybe she just likes the “nestled in” feeling of the basinet. Of course, BH can’t put anything in the crib to simulate that feeling and I’m concerned about the safety of that at home too. Any suggestions other than to just keep trying and that she’ll get the hang of it as she gets older?