Product quantity

Hello,

I'm trying to build up my ecommerce site but a little stuck. Basically I make children's clothes mainly made to order and my issue is that I have limited amount of different fabrics so depending on size chosen by customer I can sometimes only make one or two items from the fabric I have. How can I set the quantity to just 1 but customer can pick what size? So basically me listing all the size I could make from the x amount of fabric of a certain print but once one order has been made weather it was a size newborn or size 5Y I need all the sizes to become unavailable so I can reassess how much I have left and list again. Not sure if I'm making sense?  Can someone advice please?

Hi,
If you haven't received an answer yet, you can post on some FB groups
+ Squarespace Customization Resource Groups
+ Squarespace Community
+ Squarespace Entrepreneur
+ Squarespace Rockstars
 

Thank you! I'll join now, didn't know they existed :).