You know there are some after a one shot or one volume.. say it is too short and they want more.. So yes there are nine volumes and will be ten.. Milking no. It simply shows their daily life and struggles as a young couple. This is only... it is a year and half that Maya and Nemu has been together in chapter 7... then Nemu birthday was close... then it jumps to the spring.. So two years of them being together with a trials and tribulations of a young couple. I am happy to see it very detailed and moving toward them bring together for the rest of their lives.. instead of how a one volume or one shots are limited in showing this amount of detail.
She talks about volume 10 in the forward here page 10. http://www.mangago.zone/read-manga/hidoku_shinaide_dj_please_kiss_me_once_more/
She is working on something else at the moment. Someone looked.
When she comes back to it.
9 volumes, jesus fuck. The author's basically milking this shit at this point.