Hi there! I can relate to everything you are saying , including being a new mommy :) I know how hard it is to start a new fast as I have failed a few times myself but I have done a full 14 day and 30 day Water Fast in the last 6 months. Just keep trying , stay strong , find your motivation and don't give up! To answer your question on weight loss. YES, you should lose at least 40 lbs in 42 days. On the average during a Water Fast you will lose between 1-3 lbs per day. The first 7 days of the fast you will find you will lose weight a little faster then it will slow down to about a lb per day.