Good luck with all of this. You have the support of your family and that is so important. Your husband and mother-in-law sound wonderful. You are having a hard time with this. But you do deserve to have the best part of your life's energy spent with your family and not all used up at work. Those three precious, but active boys need you. You deserve to give them the best part of you. You certainly have our suppport. I am still working but when it gets too hard for me, I will stop working and find passion in my family, friends and hobbies.
Hang in there, Heather. I wish you the very best with this.
Love and prayers,