It absolutely is edging, well done you!
What’s ‘right’ varies from person to person. The only way you can find that out is by trying different things and seeing which you like best (and keep on trying! there’s always more to explore).
It sounds like it’s working if you don’t think a week will be possible, and if this is your first time trying that’s a LONG time. So don’t be hard on yourself if you don’t make it, just have fun along the way and you’re golden.
I suggest you try varying how you masturbate, mix clit stimulation with fingers, vs a vibe if you have one, add some penetration again with fingers and toys (diy toys are always an option)
Also try for more or less edges in a day, see what makes you feel best. Three is a great first objective.
And remember when I say edges, it means a specific time you set aside to masturbate, not how many times you get close to cumming. It’s great if you do manage that when you edge, but actually as you deny yourself for longer, even a short spell masturbating can be enough to just keep your arousal ‘topped up’ so you get that ongoing ‘denial high’.
Let us know how you get on!