T.A.
K.,
Congratulations on the new baby! I have 5 and I thought that going from 2-3 was a breeze. Try to encourage your children to be independent.
Dressing themselves...I kept their clothes in lower drawers so they could get what they needed unassisted sometimes and make it part of your routine now to let them put their own clean folded clothes away in thier drawers, so by the time the new baby is here thats just how you do things.
Something else I always try to do is to keep snacks made up and available to the kids so they can help themselves. Like banana bread (or any quick bread) baked and sliced I put it on the counter or table in a covered casserole dish (believe it or not it doesnt get stale if you leave the cover on). Or pretzels or muffins individually wrapped in a drawer or basket. I have also made up some sandwiches (like PB & J, egg salad-which are the 2 favorites here) and put them in sandwich baggies cut into 4ths then if I know its going to be a busy day or the baby was in a fussy time they could get the sanwiches themselves.
I also would get some small plastic bottles and keep individual portion sizes of milk in the fridge ready for them to grab themselves.
I didn't do this all the time, but there were some days that I was so glad I had these things handy! Especially if I had been up a lot the night before. Good luck to you and your family, and God Bless.