HELP! My 1yo is self weaning 😞

My daughter just turned one and my supply is dropping like crazy. I’ve read most babies don’t self wean till they’re a bit older, but I feel like she is trying to. She’s already down to nursing when she wakes up (only a few mins) and then to nap and before bed. If I try to nurse during the day or before food, she has no interest and just wants to play. I’ve been trying to pump when she doesn’t want to nurse but then when I have to nurse, I must not have enough milk for her because she will unlatch and sign “milk” to me. When this happens I’ve been giving her a bottle of pumped milk. I know I need to be drinking more water, but is there anything else I can be doing? I don’t want to wean her off but rather her decide when she wants to be done, but maybe she is ready to be done?? 😩