I, too, am home right now. although i am looking for a job. but i have been a stay at home mom since my daughter was born almost 9mo ago. obviously she was getting up often.
My husband and I had made a plan that we would take shifts, he would do early night since he had to get up in the morning, and i would late night. for instance; 8pm to 12am was his duty. if she woke up then, he would have to get her, but if it was after midnight i would get her, so he could get solid rest for work.
this didnt work out too long, but all families are different.
work is important and his needs should be taken into consideration when making a schedule like this, but your needs are important too. so if he refuses any responsibility during the night, remind him that you also work at home during the day. your child cant take care of himself/herself, and the house wont clean itself, the laundry wont do itself, etc. you do plenty of work during the day so its not as if you can catch up on your sleep during the day. especially with 2 children.
some women can do limited sleep, but some cant. it also depends on your husbands expectations when he comes home. if he expects the house to be perfect, dinner to be ready, laundry done, dishes all taken care of, children ready and at the table, etc. he cant give you too much responsibility with limited sleep.
remember that you both have very important jobs, and its not fair to choose one over the other. you both work with each other and in your marraige, this is just another small obstacle.
point out to your husband how you are feeling and give good reasons. tell him exactly why you should get your sleep! because sleep is important and if you dont have enough of it, its hard enough to function. how many responsibilities does he have at his job! you both work hard and you both deserve the same amount of respect. and not letting you get sleep is disrespectful.
hope this helps.
S.