First clean - scrubbedy dub the upper windows up to the top of the top frame, including vents all round the house and wash the rest of the upper windows at the same time.
Do the same on the bottom windows.
The tops should have stopped leeching and dripping by now.
Go back to the upper windows and do the glass only to perfection and wipe the cills. Do the same on the bottoms after you have done the tops.
Subsequent cleans - easy peasy lemon squeezy - maybe miss the top frame on monthly cleans and do it every other time if it looks OK.