For the past week and a half she has become so frustrated with nursing, she will stay on one side for 30 seconds max, then wiggle/arch/move to the other side for 30 seconds and repeat. It's really hard to get her to nurse, so I've been giving her bottles but it's depleting my stash and supply.

Has this happened to anyone else? Does it last long, or just a phase, is this my cue that's she's over nursing? She'll be 8 months in 3 days.