From here on you have many options.
You can either go with other textbooks like “An Integrated Approach”, “Tobira(上級へのとびら)”, “中級へ行こう/中級を学ぼう”, “みんなの日本語中級” or similar general textbooks.
You can go with more JLPT oriented material like: Sou-matome(総まとめ), Kanzen master(新完全マスター), Try! and similar books.
After Genki2 the road opens up pretty much and you have to find your own way to continue.
I’m a big fan of the Try! books to get an overview over the next JLPT level (in your case that would be Try! N3) and after doing that, going into more details with the Kanzen master books (which I prefer over the Sou-matome series) and doing some drill-books (I have recommendations there too) when I feel I need a revision.
I can not say much to the Integrated approach book. From what I have seen in reviews it seems to be a decent book.Though, everybody seems to like it less than Genki.
Either way you should definitely start supplementing your studies at this point with some native reading material/listening material like easy manga/dramas/songs/nhk news web easy and similar, to boost up your reading speed and get really used to the language.
And try to engage with the language as often as possible by writing/talking to natives when possible.
Hope this text helped you a little bit. Have fun experimenting and finding your own way to learn.