more bitty monarchs

I checked on the three milkweed plants. Each has a few tiny monarch caterpillars:

I thought- it will be like roads. The more roads that are built, doesn't relieve congestion. Just attracts more cars. Planting more milkweed won't prevent some of them from running out of what to eat before they pupate- if more monarchs return and lay their eggs here, I'll always have more and more caterpillars! At least, so I think.