Paper Daisy seedling help

Looking for advice — I’ve grown Helipterum (paper daisy) from seed, started in a premium seed starting mix. I grew them in plugs and when they got to big I transferred them to these 3” pots, about 4 weeks ago, and added premium potting soil. They’ve never been overwatered, they get 8+ hours of light every day, and have seemed generally very healthy until many of them started drooping, as if their stem isn’t strong enough.

Left plant: growing straight up Right plant: has flopped right over.

Visually, all plants leaves look the exact same, all very healthy looking, but almost all are growing very crooked. Do these need to be staked?