I have yet to make it a week... but.. have noted my last fast of 6 days was easier than the ones past.
I personally believe you will continue to find ways to improve, ways to further your learnings from the past - it is our nature - most are not content for long.
40 days is truely inspirational... after I put some weight back on... I plan to stretch to 14 days.
BTW... weight is coming back... I have added "Green Smoothies" to my diet... they are VERY nutritious.