As offlinehelpers has said, unfortunately this isn’t possible at this time.
I have floated an idea previously, regarding a “dynamic delivery time”, which effectively stops any orders being due on a weekend.
The idea is simple - you toggle within your account specific days you do not wish to work (or to reduce orders due on these days.
You then set the standard delivery time on your gigs - let’s say 3 days.
When a buyer comes to your gig, they see the delivery time based on the day of the week. For example, let’s say you don’t want to work sat/sun and you have a delivery time of 3 days:
A buyer views your gig on a Monday, the delivery time is 3 days (due Thursday)
If a buyer views your gig on a Wednesday, they see a delivery time of 5 days (due on Monday).
So the delivery time based on days would be:
Monday: 3 days
Tuesday: 3 days
Wednesday: 5 days
Thursday: 4 days
Friday: 3 days
Saturday: 3 days
Sunday: 3 days
This would effectively mean you don’t work weekends. Regarding Extra Fast deliveries - these could also be dynamic. The system could even go a step further and offer “weekend delivery” as a premium (like Amazon etc do with postage).
So let’s say a buyer comes onto your gig on a Saturday, they would see 3 delivery options:
Standard 3 days (Tuesday delivery)
EFD (Monday delivery) - $
Weekend delivery (Sunday delivery ) - $$
In essence it’s a simple system and is actually something you could be doing manually (by editing delivery times yourself) - it’s just a bit of a pain to do