Nick here from Shopify. Great question!
The best way to do this would be with an app from the Shopify app store. There are a few different apps on the Shopify App store which you could look into, some of the ones I like the most can be found below:
The apps let you set minimum and maximum order limits to suit your needs with other features aspects. Hopefully, this helps and is what you're looking for.
All the best, Nick