I have a 2yo and a17wo. I always have a bath at night so that I'm literally up and dressed straight away in the morning, makes me feel more able to face the day. When DS was a newborn still I sat and fed him in bed around 6ish while DD was still asleep. Then we all went downstairs for breakfast, DS in a bouncy chair next to the table. He would tend to fall asleep if I rocked it with my foot while I ate breakfast and that'd buy me enough time to nip to the loo, do teeth makeup etc and get bags organised if we were going out.
Now that he is a bit older he's doing a weird sleeping pattern of 9pm-9am so I just make sure DD and I are up, fed, dressed and sorted by the time he wakes up.
Having two does mean he has to cry sometimes. I've found white noise is my friend, I have several different bouncy chairs, the buggy and a playmat so move him around regularly with a big brightly coloured toy to distract him for bit. DD has been taught how to be gentle with him and I can now nip out the room for 5 mins and know that he will be ok. She gives him toys and comes and gets me if he cries.
When DS naps DD helps me with jobs. We roll laundry bags down the stairs, she helps me Hoover and dust. I tidy as we go along during the day, even if I've got a baby hanging off me as it just makes life a lot easier.
Dinner I initially did with DS in a sling but it was a bit dangerous!! I have now ddiscovered that he is rather transfixed by cbeebies so stick them both infront of the tv while I cook. Things like shepherds pie, pasta, sausage casserole with rice etc are all I'm cooking. I've got a huge casserole pot and fill that with whatever dish I've made so that we have enough for tomorrow's meal as well which makes life easier. Lunches are always the same ATM, big lump of crusty bread, hams, salad, fruit, yoghurt. I almost make up packed lunches for us the night before.
Bedtime took a while to come together but I've now got that sorted. If DP is home we do one each. If he isn't then I run bath, put DD in with toys then get DS undressed and quickly bath him, carry him to my bed where I dress him and then leave him with white noise playing. Then I get DD washed, into bed, story and say goodnight. I'm then free to sit on my bed with tv on my iPad and bfeed DS to sleep for the night.
The step up is what's hard, realising you need to do only the important bits and squeeze them in wherever you used to sit down with a cuppa or MN. Once you get into the swing of it it gets easier and the older DS gets the smoother everything is running as well. All the other jobs are DPs responsibility when he gets home and he takes the main role at the weekend so I can recharge a bit.