Did'nt meet my date for goal weight

Well, I may have set my goals a bit too high. I wanted to lose 18 lbs in 9 weeks, an average of 2 lbs per week. I have lost 13 lbs in 9 weeks and have given myself 4 more weeks to meet my final goal weight and then come up with a plan for maintaining my weight loss. Still going strong. Logging everything, walking 9 miles daily. I don't think that I am eating enough though. I am always under my low range calorie goal by atleast 800 calories everyday. I am not starving, just trying to eat healthy. Have a great day everyone.