Did u up their prices mate ?I was 4 and 8 and it becomes a nightmare when each cycle is different from the last.
Plus the odd 6 weekly also.
Now all 6 weekly my round never changes except the quarterly flats I have but do them once finished normal work for the day anyway.
That and the 3 weeks I spent on lockdown means i have days in 1 or 2 roads all day now where I have moved stuff about.