> Made the mistake of having a shave when noticed I
> had a beard

So the beard was there *before* you shaved

> so ended up with a 'fuzzy' chin until spent the time
> plucking the blessed hairs out.

Plucking weak hair may weaken it further. Plucking hormonally-fuelled hair can make the growth stronger, though.

> After doing it used teatree aftersun to cool it down;
> since then only the odd sprouting hair and a not too
> rough chin. Johnsons baby lotion a couple of time a
> day and a daily check seems to be working well at the moment.

It all comes down to whether the hair growth is hormonally-fuelled. Watch it over the next year or so before reaching any definite conclusions whether the growth rate is reducing, increasing or staying much the same.