I would second the recomendation on listening. But both actice and passive listening together. Meaning, you watch a show a video or whatever (trying your very best to understand, aided by subs, watching it once with jp subs then eng subs, if you think you’ll be missing too much just with jp subs, animelon assisted, etc). Then you rip the audio from that show, and throw it into a MP3 player… then that you make the soundtrack of your life for the next 2 months.
The active watching and listening can have various shapes and forms depending on your current level. I use this routine to learn from the lines of my shows and dissect those sentences one by one (the ones that are in my level of understanding or almost). Now the same routine became my listening routine, and english it’s not needed anymore, since these are all lines with vocab and grammar within my reach.
My first week in Japan has confirmed that listening practice with native material (like Terrace House) was a wise decision… long and deep conversation are nowhere near yet, but a broken japanese english from the other part plus my broken japanese has allowed me to communicate much better than expected, so I would suggest a similar approach