I am delighted to see you here at WK Lswan san 
Looks like we are still almost leveling up close enough 
I do not have a high opinion of Rosetta Stone for JP at the moment. I feel there are better investments out there. Have you tried listening to Podcasts? You can take a look at the below thread for awesome resources
I use Duolingo too. I see many people diss Duo’s JP course, they do have a few valid points. Although I differ slightly, I do recommend doing Duo as a supplementary resource. If we only rely on Duo, it is not a good choice. But I do believe it is a good supplement. (A side dish)
I felt the same way as you for a little while. Remember exposure helps and Duolingo does that a lot Your mind is retaining it in the back end and I can confirm that happened to me.