Be ruthless and throw away LOTS then tidy whats left, i find storage boxes for specific groups of items out of the way help with whats left. Dividers in drawers to organise them.
Living room-
Dust everywhere
Clean windows
Clean surfaces
Hoover under sofa cushions
Wipe skirting boards
Hoover floor
Kitchen-
Wash up pots
Clean sides
Wipe cupboard doors
Wipe fridge inside & out
Clean microwave inside & out
Clean windows
Hoover floor
Mop floor
Bathrooms-
Sort out toiletries, throw away empties / almost empties that have been there a while, clear junk
Clean inside toilet
Wipe around toilet seat, cistern, and sides
Clean sink
Clean & rinse bath / shower & glass if you have one
Hoover / sweep
Mop
Bedrooms-
Tidy things that are out
Change bedding
Clean windows
Wipe windowsills
Dust everywhere
Hoover
Just write them down and tick each thing once you’ve done it. I prefer to do all the windows then all the dusting then all the hoovering etc at once