Hi we have 5DC.
Morning routine we get up just before 7 and get the children up at 7,I get up,make our bed,let the 3 dogs out get the cat in.I stick the washing on(machine loaded the night before)I feed the cat and do the 3 dogs bowls,fill the kettle up and stick that on.
Whilst I'm doing that DH gets the children up and they come downstairs.He asks them all what they want for breakfast and starts making that.
I sit down with the children whilst they're eating they're breakfast and have a cuppa.DH has a cuppa and then makes youngest DD's packed lunch.
Then I make sure everyone starts getting ready,whilst one's in the bathroom washing,brushing teeth,sticking on they're deodorant then I make sure the others(except youngest DD7)go and make they're beds and air they're bedrooms.Me or DH do youngest DD's room(she's disabled)then the next one into the bathroom whilst the others are checking they're bags are ready ect and so on and so on until they've all been in the bathroom to get ready.Then I do both the girls hair whilst DH gets washed and dressed then I get washed and dressed.
Out of the house just before 8.
When they were younger(youngest DD breastfeeding)before I became disabled.I'd get up about 6.30 and take youngest DD downstairs I'd top and tail her,clean nappy on and clean clothes on and then I'd give her a breastfeed.Then I'd put her into her baby swing,then I'd put the washing on and kettle on.Call the children down then see to the pets.
Ask what they'd want for breakfast,make they're breakfasts.They'd all be making a lovely fuss of youngest DD,I'd sit down and have a drink and some breakfast with them and then the same as above.No packed lunches to make back then.
Evening routine,I batch cooked whilst near the end of my pregnancy with all my children.So we had about 6 weeks worth of meals in the freezer.
Whilst your DH is still on paternity leave could he do some batch cooking to fill the freezer up for when your on your own or could he look after the children whilst you do the batch cooking?
If my DD was fussy and I was cooking the dinner when she was small enough I'd stick her in her baby bouncer or her swing and have her in the kitchen with me,when she got to big for them I bought a really cheap bus buggy and would stick her in there in the kitchen with me and she'd be happy to watch me cooking.
With bath times when ours were young like yours they liked having a bath together would that work in your household.Two older one's in the bath and then a bath for baby on it's own.
What way round you bath them depends on your family's timings.If your older one's go to bed first then bath,pj's and bedtime story for them and then do the baby once they're in bed or if the baby goes to bed first the other way round.
Once the children were all in bed asleep,I'd iron everyone's clothes for the next day mine and all 5DC and DH's if he was of work or he'd iron them and then we'd lay them out ready for the morning.Each persons clothes laid out with they're underwear on top so they knew which was they're set.