So your target is to earn more than double. Great, It's inspiring me, I will try to achieve this target in next month
Last month I earned 236$ from Adsense, This month's target is 320$, (Very busy this month)
My blog is just 8-9 months old. I did not even know about robots.txt in Dec 2016. and Credit of all these goes to one and only one - Shoutmeloud.com and members in this forum.