nursing strike

Meredith • Mother to my rainbow baby girl 10/21/16 and 1 on the way due 1/4/19 🌈🌈
My 8 month girl is seeming to be showing decreased interest in nursing - very upsetting for me. She has been nursing several times a day and supplements with formula, now eating some solids. I've noticed that my let down is not happening as quickly - suggestions or similar experiences?