Lord, give me strength!

I guess my little one is going through that "three week growth spurt" because she is eating a lot more, crying a lot more, and wanting to be held all day and night. She is so fussy throughout the day that she misses her chance to nap, but she exhausts herself enough to sleep for hours when she does go down. I dont know how much longer I can handle this little growth spurt she's going through. It has me so stressed out and exhausted it's affecting my milk production. I've noticed a huge decrease in my supply when I pump. Praying for the strength to get through this.