How many frames of brood?
I've just recently put supers on single brood that was a week ago the flow has only been going for three days and some have two to three frame three quarters drawn.
Most are between 6 to 9 frames of brood. (Solid)
Colonys on the vetch( double brood) I will be checking in 5 days, hairy vetch has been flowering for 3 weeks or so I would have to look at my diary's.
Demarreed colonys.
Much the same as my doubles.
Big colonys - strong flow, adding supers near enough every week although there was a lul untill the weather picked up.
Quite a few variables to give a true time scale.
By the end of the season I will be able to give more of an answer based on the flows from the vetch.