It was decent in the beginning, but the inconsistent handling of Skylar's communication as a non-speaking character was frustrating.  
In the first half of the book Skylar mainly uses text to speech, but in the second half he shifts to more lip reading with some signing. The lip reading overrepresents how much you can understand from lip reading, particularly in low lighting. The lack of specificity of sign language was also frustrating - ASL uses a different grammatical structure than english, yet the characters would mouth english words at the same time as signing, implying they are using english sentence structure. Based on the acknowledgements, the author is not non-speaking, so I'd say more detailed research was needed to more accurately represent communicating as a nonspeaking person. 

Ultimately, it was a cute gay YA book but it felt unpolished and rushed at times. The great parts of the book were overshadowed by rushed portions (and the communication stuff mentioned earlier). I did appreciate the realism of conservative US in the 2020s.