Reddit mentions of Don Quijote de la Mancha. Edición RAE / Don Quixote de la Mancha. RAE (Edición conmemorativa de la RAE y la ASALE) (Spanish Edition)

It is certainly a quite sophisticated critique of "libros de caballería", "novelas pastoriles", (of which Cervantes himself was a relatively failed author), novelas moriscas, utopian novels, Spanish "remakes" of classics like Roland and King Arthur, and many other literary forms of the preceding century. Are you reading the novel in Spanish? If so, I recommend a critical edition with copious footnotes that point out the metaliterary aspects of the novel. None of the English language editions do a good job of this. This is a good one by Francisco Rico with the participation of many other scholars, as is the one edited by Martín de Riquer:

https://www.amazon.es/Don-Quijote-Mancha-R/dp/8420412147/ref=pd_lpo_sbs_14_t_0?_encoding=UTF8&psc=1&refRID=SQRB6NFVDR72WSPTV21R (Francisco Rico)