Sorry coz, but the very WORST thing to do during a growth spurt is to supplement formula (if the woman intends on breastfeeding beyond the growth spurt). The very essence of what is happening between mama and baby is undermined if supplementing occurs. Baby needs to let mama's body know that it needs more, baby needs to be sucking for more as much as possible until baby can get the amount she's looking for. It doesn't take but a day or two.
Tezzy, just think about the very next feeding. Get through that. We'd all go a little bonkers if we thought about the next few MONTHS/YEARS feeding schedule...
It is very overwhelming.
But mama you're almost halfway there. By six weeks it's all starting to get easy! You're doing the right thing by your girl! I know it's tough, my daughter is the very same way, and when you have a family and chores, and people that need us - it's hard to justify all the time spent with baby. But it IS that important... Again, it won't last forever, and Ffion isn't starving, she's just frustrated. She got fed 24/7 just a few weeks ago... she's as frustrated at all of this as you are! Don't undermine the benefit of your breastmilk for her.
Please note I'm only trying to be encouraging for you. Again, take it one feed at a time, just get through the next feed... then the next, and the next... pretty soon you'll be regulated...
I do understand if you decide not to BF, and though I'll encourage you to keep it up as long as humanly possible, you aren't a failure if it doesn't work out.
Just take it one feed at a time
Hang in there mama...