Good for you!
I just packed up my pump yesterday. My son is almost 13 months old and I am still nursing but no longer using the pump. I work full time and went back when my son was 13 weeks old. Here is what a typical 24 hour period looked like for me when I first went back to work:
3am-overnight feeding
5am-morning feeding
6am-pump
7am-last minute fill up feeding
9:30am-pump at work (at LEAST 15 min)
12:30pm-pump at work (at least 15 min)
3:30pm-pump at work (at least 15min)
6pm-just getting home, feeding
7:30pm-nurse to sleep
10pm-"dream" feeding
10:30pm-pump then go to bed
This is a ton, but it worked. And I really needed all of this to keep my milk supply up. Eventually I dropped the night feeding, then the dream feeding and then the 7am 'top off' and for months we were down to just those remaining feedings. Then when my little one was about 11 months old I started cutting out pumping times at work...and you know the rest is history. I just got off the pump, I never gave my son formula, ever.
When I went back to work I had about 75-100 ounces of breastmilk stored. It was more than you'll probably need being a nurse, because I will sometimes travel for work. A couple of times I had 2 or 3 day trips, so I always tried to have enough for him just in case something came up at the last second. I stored all my frozen milk in 5 ounce bags so I could take out what I needed. On Fridays I would take my pumped milk and freeze it and then Mondays I would defrost the oldest milk in the freezer so that my frozen supply would always be fresh, no more than 2 months old. I continued to pump in the mornings and night during the weekend so that I would keep my supply up and that would make up for anything that I was short during the week.
Since you are still home I recommend pumping after every feeding, then you know that your baby has had his fill and whatever is left is extra. You'll make more by the time he is hungry again, plus in a couple days you will find your supply has boosted.
I also drank the breastmilk teas (3 cups a day or they really don't work), ate oatmeal, barley, drank dark beer, and limited parsley and peppermint. This was alot of work but it was totally worth it.
Lastly, I HIGHLY recommend the Medela Freestyle Pump. It is a pricey $400, but it is portable, can be hands free, and only weighs like 4 pounds. With the Medela soft cups, it was comfortable but also very powerful. I think this was what made me able to pump and nurse so long. I had a different Medela pump for my oldest son and it just didn't work as well, my supply always struggled and I gave up at 7 months. Also, no bottles at night and on weekends. I know it's tempting for Dad to feed baby overnight, but I always needed the stimulation and my son needed the reminder of how to feed from me instead of the bottle.
Sorry for the novel--LOL! You can do this. You can find time to do anything that you love and are committed to, even with kids and on a mommy schedule. Never worry about your son being hungry. He'll tell you if he needs more, and the more he nurses the more milk you'll make. Feel free to send me a message if you have any other questions.