I can't get on top of it either OP. I'm at home with a 9 month old who just has mini naps. If I knew she would sleep for x amount of time I could plan what I needed to do and whizz around the place.
However, i have some strategies. When she is in her high chair, I give her some finger food while I sort the dishwasher and wipe everything down, sweep the floors etc.
When she is in the livingroom I tidy up around her. I have one corner of the room where I put stuff that belongs in other rooms. When she naps, I run around delivering the items to their rooms. I sort them later.
I make sure piles of clean laundry are stacked quite neatly and sort them the following day/when I get a chance.
I bought a spot mop which is awful for the environment but excellent for my mental health and just whip around with it. The place is always dusty, corners need attention, cobwebs suddenly seem to appear frequently.
Bathroom is passably ok: I find keeping it tidy is easier than clean. Sometimes I quickly spray the sink and toilet with Flash and give it a swish with with loo roll of I've literally 30 seconds to do it.
My main tip for getting on top of things is to make sure that by 'close of play', when I go to collect my older kids from school, every room looks quite neat if someone popped in for a quick inspection, even if I'm halfway through things.
So, clean laundry in the basket in as tidy a way as I can. Kitchen surfaces and floor swept and wiped down, even if the sink is full of dishes. Bed made and floors at least swept. Toys put away and cushions/throws etc positioned neatly. Then I chip away at it the next day. I did the ultimate mum-fail and stuck my baby I'm her pram in front of an ipad for 10 minutes while I had a quick shower. It's impossible to get even the most basic things done sometimes.
My husband does his fair share though so it's not all on me.
I heard a good tip about something else once, and keep it I mind: 'done is better than perfect'.
You arent alone in the snow shovelling!