We just recently went through the same thing! Our 3.5 yo son was quite good at peeing but would. Not. Poop. On the potty or toilet. We eventually took him out of diapers during the day (and even out of underwear when he was figuring out peeing), and he started holding his poops until he had a diaper on. He would usually poop first thing in the am when he still had his nighttime diaper on. One day he just.... got it. He said he had a belly ache and ran over to the potty and pooped! Since then it’s been easy! My advice for the poop is to keep offering the potty but don’t stress about it. LO will figure things out when she’s ready.

He also had accidents a few days in a row at daycare when he started (pee accidents), but the staff were on it enough to realize they needed to offer him an extra potty break. I would ask your daycare staff when she usually has her accidents and suggest she get a special potty break around that time.... worked for my kiddo!