Hi S., I have a 2 1/2 year old daughter and a 7 month old! They both stay home with me. My 2 year old will begin preK3 next year.
To answer your question, I'll let you know what I do, which works pretty well for me, maybe you can get some ideas for yourself.
My days begin anywhere between 630am to 730am (depending on the time that my 7 month old wakes up), usually 700am.
The girls have their milk, I make breakfast, I dress them and myself and I am OUT THE DOOR! Whether its My Gym, Music Classes, the Park, or at the moment Swim Classes. I'm usually out the door between 9 or no later than 930am. (By this time my 7 month old is ready for a power nap, which she takes in the car on the way to whatever activity, this works out very well).
Between 1000am and 1100am (1130 the latest), they are busy with their activity. (I always make sure to pack snacks for my 2 year old, such as Fishies, sliced apples, raisins, juice box, water) and then I either feed my 7 month old (approximately 8 oz of milk) before getting back in the car if I know I have to take a long drive to my 2nd destination (the 7 month old usually falls back asleep ) or not if I'm going straight home in which case I feed her the second I walk in the door.
I feed the baby another bottle, and my 2 year old and I have lunch no later than 1230pm. After lunch... NAP TIME... for both of them. I find that putting the baby to sleep first makes it easier, then my 2 year old goes down. (If there is anything you take from my schedule, it should be this... putting BOTH of them down together for the nap, that way you have time for yourself!) Although the baby usually wakes up first, they nap anytime between 100pm-300pm.
By this time, I already know if weather permits if I'll have another outside activity or if I'm staying in. And when I say activity, its more of a mami activity, Target, WalMart, Publix... an errand I have to do... my 2 year old gets a snack while I feed my 7 month old her "lunch" pureed veggies, fruit, oatmeal... with her tummy full we are ready to go. If we stay inside, my 2 year old might watch a movie, or play with her blocks, or dolls or paper and crayons...
We have dinner (or at least I try to) no later than 530pm. By this time my 7 month old has already had another 8 oz bottle and fruit or veggie or yobaby yogurt for dinner.
600pm bath time. I place both of them in the tub. the 7 month old goes in her little tub inside the big one with her big sister.
I feed the 7 month old her last bottle and by 700pm she goes to sleep.
The 2 year old sometimes has some milk or water, we read, and no later than 830pm she is in bed.
That's pretty much my schedule in a nutshell. Hope that helped.