How to prioritise iPhone Contacts iCloud sync? Is there shortcut?

How to prioritise iPhone Contacts iCloud sync? Is there shortcut to toggle iCloud sync for all apps?

I need help with Quick Step toggling iCloud sync for apps that have iCloud enabled.
I have only two hours every evening access to trusted WiFi but this is not long enough; Apple Support advised me to connect to trusted WiFi all night long to try resolve recently added contacts missing from iCloud; (everything else is iCloud synced except recently added contacts). Trusted WiFi all night long is not financially possible when my broadband isn’t at where I spend my nights.