My "Устав Православного Богослужения" by Kashkin, says that on Cheesefare Sunday and all Sundays of Great Lent the Canon to the Theotokos is omitted, but unfortunately it explains why it is omitted...
"канон не поется так как на кануне совершалось бдение"
The canon is omitted because on the eve a Vigil was served
Does this mean that even during the times outside of Great Lent on Sunday evenings the canon from the Octoechos to the Theotokos is omitted? And today, because St. Nicholas is a Vigil rank saint, we wouldn't not read the canon?
If yes, could someone give a reference where it says that in the Typicon or somewhere? Or maybe share the practices they have encountered?