I used to be a single mum working f/t so here's my perspective:
You seem to be out of the house for a long time. Is there a long commute in there? Could you do a f/t job with a set 9-5?
Is he napping at the CM's? Could you increase this to say 3 hours so he has more awake time with you?
What exactly do you want to be doing with this extra 1:1 time? It seems like you are feeling unecessary guilt. At that age they tend to be rather passive participants in whatever you are doing.
If you see the bathtime as quality then have longer baths with him, if not then cut down to every second day or less.
I wouldn't see cooking as not 1:1 time if he's next to you watching you and listening to you commentating on what you're doing. I think it's a bit artificial to have someone else do it. Also f you can afford a cook then why cant you afford to cut your hours, if more free time is what you want?
If you're organised the night before you can get the up and out time in the morning down to 15 mins or less (I did this).
I'd maximise the time you have with him ata the weekend and save the laundry housework etc for when he's in bed rather than do it with him during the day at the weekend.
Why do you feel insecure about money? You sound quite stressed and are maybe seeing problems that aren't there.