Back when he posted weekly on cien he used to post on Saturdays, and since the plan was for the game to release this month he'll probably post either tomorrow (the 20th) or the 27th. Either that the game is finished or (more likely) that he needs some more time. Although Japanese h-game creators seem to live dangerously (car crash, death of family members, illness) and push deadlines a lot, I'm inclined to believe this guy, he has been making weekly updates for several years and seems to be a (comparatively) hard worker. This long between posts is the normal length between updates for other creators, like for example the notoriously lazy Shinchaku Castella who postponed his game two years due to mind breaking himself with NTR.