Once it gets to August, and once some crops are gathered and some flowers are knackered due to heat or drought, and the weeds seem to be the only things doing well, I always feel that it's time to prioritise just keeping things tidy. Hit those weeds (I don't use weedkiller so I either pull them out or burn them off with my weed wand), deadhead the flowers and don't endure stalky stuff on the dead lawn. Just stuff like that makes my garden look much better, even when most stuff is suffering from the heat and drought. We're having the worst year ever for that.