i will have 3 under 3 when this one is born, i will be doing the same with this one as i did with 2nd, you look after the one who needs you. i have the boys in a routine so they are fed together, bathed together, nappies together. i am sure it will be a lot like a conveyor system when this one arrives but routine is key!! i have been exceptionally lucky with my boys that they slept thru night from 8 weeks old and i clean when they sleep then dedicate my day to them when they are awake. i have side by side double buggy. twin city wheels elite, and its so light, and i do not have any probs with doors etc!! i am going to get a buggy board for eldest this time.
you cope much better than you think you can!!!