I am basically just venting here, but would love some perspective as well. My almost 6MO has been drinking more than I pump and I have a dwindling freezer stash (less than 20oz), so I have been adding pumping sessions to get back some freezer milk. However, we are entering the 6 month growth spurt. I started the week off with 18 oz of pumped milk and he drank it ALL yesterday. SIGH. I told daycare today that I am having trouble keeping up and I would love to try only feeding him 4 oz at a feeding if possible. Some days he is fed 5+ oz at a time at daycare. I hope that was the right thing to do. Of course I am second guessing that now. (Mom guilt sucks.) I can totally handle him drinking 15oz from 9am-5pm, but 18oz a day is going to make it really hard for us. I am nervous about not being able to keep up even with pumping 4x a day. I don't have supply issues I don't think. I respond well to pumping, so I get quite a bit of milk during the day and since I have added pumping sessions I think my body is going to start kicking it up a notch. Did I mention my guy is NOT STTN and wakes to eat at least 1x? I am crossing my fingers that this week will renew some confidence that I can continue to keep up with him. We have started solids, but he isn't loving everything just yet. We are sort of still in "practice mode".

Re: I can do this...
Also can you add in extra pumping session after you feed him before work or after he goes to bed? With DS1 I was away for 12 hours and he was in bed when I got home. I pumped one side when I fed him in the morning, 4 times at work and when I got home.
You may also be starting solids soon so maybe that will help a little bit. Good luck!
It's always nice to know I am not the only one. I am now pumping 4x a day. Morning on the opposite side, 2x at work and 1x at night after he goes down. I hope this will help me get a jump on some extra milk. I just hate not having much in the freezer. I never had this issue with DD. She hated bottles and we had a whole freezer full of milk. I talked to daycare and I think they understand now. I gave them the green light on solids 2x a day last week, so hopefully he will start liking them and eating more of that soon. He just LOVES Mommy's milk. :-)
Can you add some power pumping sessions on the weekends?
An article or LC might tell you about how much your LO should be eating, but I would definately watch and make sure 4 oz is enough. At 5-6 months, my DD was eating 5 oz every 3 hours, and she was in the low range weight wise.
18 oz in 8 hours, your LO is being overfed at daycare. No wonder you can't keep up.
Rule of thumb is 1 oz every hour you are gone, 1.5 on the high side. Your DC is feeding more than 2 oz each hour.
This is making me feel better. I am going to keep pumping my little heart out so we can put some more backup milk in my freezer, but I am hoping my talk with daycare is going to be the ticket to our success. We can do it! I just have to keep telling myself that. :-) Thanks for the feedback.