I would leave it...not much you can do. Some of my tiny ones take a little while to get going. Remember, they eat their eggshell, so it has eaten. Give it a little time. Hope it's ok, but remember, some just don't make it.

Where are you that you see Monarchs? I am in VA and haven't see any yet. So bummed.

I've only seen 3 monarchs this year, and two of those laid eggs on our milkweed! I'm just west of Chicago and they are just arriving.

I moved my slowpoke to a fresh leaf today. He's moving his head around but not crawling and not noticeably eating. He did not eat his egg shell.