Re: Grading question advice please
Have there been gradings after that conversation? In our dojo, we only have gradings maybe three times a year, and it could easily happen that someone takes their first grading after 8 months or even more. If there have been gradings in the meantime, it would indeed sound more like your sensei maybe forgot about you, or changed his mind for whatever reason.
Maybe you could sound out a sempai first about how gradings are generally done at your dojo? At some places it's not considered appropriate to ask to be graded, but that varies from dojo to dojo.