I remember when dd went back to school the September I was of with ds.
I was getting ready for work, getting her ready and stood doing her packed lunch (dh started work at 6.30 so he could finish early and pick her up from school) and complete terror gripped me about how I was going to do this when ds arrived.
Long story short, I just did it. I remember packing him into his car seat early rocking it with one foot while doing dds hair.
It wasn't easy but we found a routine fairly quickly. Dd was a bit older (6) so she helped out with him in the evenings so we were all together. She would help change his nappy and bath him. She would sit next to his Moses basket and read to him.
One of us would do her homework with her alone and one would put her to bed.
By the time I went back to work dh was working evenings, that was a bit difficult. Trying to do dds homework and get ds sorted. But we just got through it, taking each day at a time.
I also learnt to say no to visitors. I love evenings in with my kids alone. And enjoyed the daytime when dd was at school and I could chill with ds.
He is now full time at school and I miss those days so it can't have been that bad. 