It's so stressful when suddenly my milk supply starts lagging behind and I'm wondering if I'll make…

It's so stressful when suddenly my milk supply starts lagging behind and I'm wondering if I'll make enough for her in the coming days! What to do? Suggestions? I'm a full time pumper. Today I've been pumping every time she eats and each time I get less and less milk. Will my body figure it out and catch up?