i really dont understand you keep changing frequencies!!
4 weekly to 8 weekly overnight?then now to change them again to 6 weekly?
many years ago i did fortnightly and monthly then about 15 years ago i put them all on monthly as 2 weekly really was too frequent although lots of window cleaners still clean fortnightly near me.
now i have lots of different frequencies but it doesnt cause me too much trouble organising due to round software.
most work is monthly or 2 monthly
some work is 6 weekly(commercial and some stand alone domestic)
some 3 monthly jobs
a 6 monthly large church
on lots of very compact work its either monthly or 2 monthly.i wont clean 6 weekly or 3 monthly on this work as it would mean cleaning work out of sync and returning to some streets at different times which i dont do.
very best wishes
dazmond