Feeling like progress is static

I might recommend taking a look at the Absolute Beginners Book Club // Currently reading Teasing Master Takagi-san // Starting July - When Will Ayumu Make His Move. It will probably feel really hard at first, but will provide you with a great resource to learn lots of grammar and vocabulary along with other people. In particular, the book starting July 10th is currently free to keep on Bookwalker if you grab it before July 1st, so even if the book club doesn’t work out, you won’t have wasted any money on it. There will also be a vocabulary spreadsheet for the book, which will be much easier to use than looking up a lot of words in a dictionary.