Not sure how helpful it is but...

With Charlotte we have mini-routines. So our whole day isn't scripted, but we have progressive events.
So in the morning we make her breakfast - she helps - she gets her own spoon from the drawer and her own bowl. She sits on the bench and pushes the microwave buttons for her porridge. Then we sit together on my bed (the only tv we can get ABC for her cartoons lol) and eat breakfast together.
She then helps me collect the washing, open the blinds and put the washing on.

At lunch time she again helps with making it, gets her own plate out etc. She gets choices of A or B sometimes so she feels involved. We eat lunch at the same-ish time everyday, she has a feed and a nap at the same time-ish during the day.

I try and get her out of the house at least once a day - she gets all excited nad helps with her cabin fever and thus her behaviour.

She helps me make dinner where she can, or I put on a DVD for her, or her music and she amuses herself dancing around the house. We eat dinner the same time-ish every night, then a bath, then cuddle story (or 10 lol) bed.

Charlotte sure has her moments and she whinges or sooks about many things during the day - we have entered the "I want I want I want" phase with a vengence and being with her alone for 2 weeks at a time is getting difficult when she is like that - I don't enjoy her company and get very snappy with her, sometimes unfairly. But I have found that spending some time with her, just doing what she wants for even 15 mins means she will give me a decent time by myself to get things done or watch a cooking show, work etc.

Repetition with her works well, the order. So we run through the days and what happens (Wednesday kinder, Thursday kinder, Friday pick daddy up from the airport etc) and try to add consequences for both misbehaviour and good behaviour.

So we have several routines through the day. She helps me complete tasks I need to get done - helps with washing, putting away dishes, she has a dustpan and broom and her own little spray bottle with water and a tea towel and she 'cleans' the cupboards lol The more she feels she is "helping mummy" and a little bit of dedicated playtime and she is usually very obedient, has fun, and we all have a good and stress free day.

Now that is all obviously with only her, it must be soo much harder with a newborn as well!!

HTH and hopefully someone with toddler/newborn experience can offer something of more value lol