Ways to help increase milk supply

So my babygirl is 2 weeks and I was pumping and feeding breast milk with maybe only one bottle of supplement. But my milk supply has decreased alot since I'm not pumping as much due to my dog ate my pump and it doesn't work like it use to. I've been nursing more now but I've noticed over half my supply has just vanished, I'm eating the same as always and I may of slacked off this weekend and not dranked as much water.

I'm a ftm so I'm not sure what all to do here. Any suggestions on how to increase my supply back to where it was?? I don't like tea also.