Not a single mum but practical tips.
If you are anything like me a messy house makes you more depressed so it's possible to do stuff with a baby, but it's shock to the system.
I do:
Clean the bathroom every time I shower. So after my shower wrap my towel around me and do a 5 min wipe and clean. Every time I go to the loo I give I a quick wipe and shove some bleach down it.
On a day my husband was around I did a ruthless de clutter. Bought a large box for babies toys and anything which doesn't fit is donated. Have a wardrobe and bookcase for baby. It's amazing how much baby crap you can fit in Those two items. At the end of the day while holding baby as part of bedtime routine all toys go in box, clothes go in washing basket or wardrobe.
I do one wash every single morning on a quick cycle. Dry on clothes horse as soon as done. Put away while clearing toys at bedtime. Baby when younger went in bouncer, then playpen, now 'helps' i.e. Crawls around in vicinity.
I put baby in sling to hoover with a toy attached to a dummy clip.
Cooking I find hardest. Usually it involves baby in highchair with a snack (pre weaning would use bouncer) make stuff which is super quick like pasta, can knock a lasagna up in 10 mins flat at a push.
I use nap times as my chill time. And go to one group/park/see a friend every day in the afternoon.
So average day is:
Up loads in the night/co-sleep on bad ones.
7ish give up and put baby on highchair with some cereal in front of CBeebies. I use this time to make my breakfast and a cuppa and put on a load of washing.
After breakfast we get dressed. I generally speed dress while keeping an eye on baby crawling everywhere. This was easier when I could plonk baby on bed and make faces while dressing.
We walk dog and then go to an activity.
Back for lunch - prep while she has some fruit in highchair in kitchen. Eat and clear up quickly while she is still in hoghchair/
Nap time and a break for me
After nap we spend 30 mins on a chore so Monday is living room, Tuesday bedrooms etc she is normally easily entertained after nap. I do the best I can in 30 mins. We then play and chill until dinner time. Follow same routine as lunch. Then quick clear away signals start of bedtime. Bath story bed. When she goes to bed I shower.
I hope that helps, it's evolved over months. Sorry for essay