TLB, poor DD - hope she's over her jabs soon. My next is due on Saturday btw - not tired of being asked Eager to meet him or her though!
Do you know what? Lots of what I read in Tiktok's post about a placid baby who doesn't ask to be fed very often rings bells with me and my DS. He very rarely cried during his first year, he's got a lot more "noisy" since he was about 18mo and he realised there are things he can't do that he REALLY wants to (mainly play in the refrigerator, use the PC(!), etc).
He went through a period of feeding only four or five times a day and sleeping through - at about the same time he discovered his fingers to suck - and his weight gain dropped off accordingly, as I say.
I plotted his growth on a bfed from birth chart and he'd dropped through the centiles on that too - they're not vastly different from the red book charts, as Tiktok says. There's ounces in it, not pounds.
DS remained happy, placid, lots of wet and dirty nappies, etc - just didn't gain weight as fast as he had done (he'd put on 10 and 11oz a week to begin with iirc and started to lose an ounce here and there or only gain two or three, then he'd put on six in a week - then I stopped getting him weighed because I was bored of seeing my HV ).
But I do remember he only did this pattern of feeding for a short time - he soon went back to feeding more often. I used to feed him when he mouthed for feeds - he'd get a bit agitated and suck his fingers - I didn't wait for him to cry because he'd gulp when he started feeding then and take in loads of air, then just be sick - waste of everyone's time and washing powder
I went back to work again part time (two days a week) when he was 6mo and used to leave 20oz milk if I was leaving him for 12 hours (plus feed him morning and night and if he woke) and he'd have that over the course of three or four bottles, plus a bit of food. He used to take between 5 and 8 ounces in a bottle - more often 6ish, if that helps at all. I never froze more than 4oz quantities, and more usually 2oz and 3oz bags (I used Lansinoh bags - think they are fab - you can get them in Mothercare and Boots).
What I'm trying to say is that I am sure that DS just found his natural growth line - he now eats like a horse (he's 21mo now).
Can you try using a sling to carry DD in? Unless you already are, that is!
Really not sure if my rambling has helped, but I hope it's a bit reassuring!