I almost didn't go to the party at all. I ate some McDonald's food on Tuesday and then got REALLY sick on Wed. I lost 5lbs in 4 hours Wed morning and got so dehydrated that I barely recovered by Friday. My supply dropped significantly in those three days and I was worried about leaving her to formula since I had yet to recover my supply (still working on that part of recovery).
But I did go. We only stayed about 3 hours as I was feeling quite drained. She took the formula in the bottle just fine, drank a little over 2 oz and was acting like she'd take more. I fed her when we got home and she emptied me on both sides.
I gave her a 2 oz bottle the next evening after running empty during a feed and I gave it to her after the switch sides dance for 30 minutes. She seemed satisfied afterward but I put her back on the breast and she suckled on and off all night long.
The RTF formula is only good for 48 hours after you open it, so it gets dumped today ($10 for 4 oz... what a waste).
my supply is starting to pick back up. I was able to stomach oatmeal today, so hopefully it boosts it. I am considering getting a can of Allumentum powder as she still seems not completely satisfied in the evenings. This way I can rest assured she is getting enough when I can't squeeze any more out for her.