I cleaned everything in my home that was visible, under washer/dryer, kitchen cabinets, refrigerator, etc before #3 was born because with a home schooled 4 yr old, 20 month old and an newborn I feared I'd never have a clean house again. I wish I had cleaned out more closets and storage before the baby came, but I just didn't have it in me since our then 20 month old still wasn't sleeping through the night yet.
The biggest thing, though, that I'm glad I did was remember that my 20 month old was still a baby even though he looked so big next to my newborn. I spent a considerable amount of time holding, rocking and reading to him when my newborn slept or Dad could take over his care. I didn't get much done around the house those days, but looking back, it doesn't really matter. What matters now that they are all past 2 yrs old is that they are healthy, secure individuals that know Mom and Dad love them. The house is still a mess sometimes (3 kids can mess a house up way quicker than 2), but now they can help me clean it up. My husband and I still don't get a lot of sleep sometimes, but we are happy and content with our 3 little blessings. Take time to rest and enjoy all 3 of your kids. Say "yes" to anyone who wants to bring a meal or run an errand for you. They will feel blessed and I assure you that you will be too. Best wishes! Nurse Midwife Mom of 3