I have a bastille baby soap (about 85% olive oil) that is great at 2 years old. I did use it before that, and found it pretty nice at 6-8 months, but awesome at 1.5 years old. Super mild, and hard and firm in the tub with no "snotty" texture at all. When it was newer, it did have a bit of slime to it.
'Typical' soap I do 6 - 8 weeks which I consider 50% or less OO. Over that gets 3 months minimum and if it's over 80% I do 6 months to a year depending on the recipe.
My pure 100% OO gets no less than a full year. I'm doing a hundred Castile for a friend who owns an olive orchard so using her OO.. she had her other friends test the bars recently at 8 months along and several said a bit slimy. She wants them now but this just showed her that they need a year and worth the wait IMO.