Despite the situation, at least one instar is still munching on the larger milkweed plant. It's pretty small, though, so if it's actually from the hatch from two weeks ago, it may be struggling. Then again, it could be a newly hatched caterpillar.
It's warm today, but rain is predicted in the next couple of days. That might give a few new milkweed plants a chance to grow. We'll keep watching and reporting on the happenings in Archie's Garden!