Nothing makes be throw up in my mouth a little more than being asked if some specific piece of created-FOR-LEARNERS content is a good source to sentence mine from..... It blows my mind how attached people are to sticking with fake baby materials.
Well the method of learning Japanese that I espouse is quite unorthodox: it involves ONLY getting input for the first year, with zero output. Sloppy grammar isn't an issue, since we don't began attempting to output until our brain has fully acquired the system of the language