I’ve had best success with 1/2 tsp table sugar per 12 oz. bottle … I reduce to 3/8 tsp per 12 oz. for heavily dry-hopped beers, as the hop creep leads to gushers when I’ve used 1/2.
And I agree with those above recommending 1/2” to 3/4” headspace in a 12 oz. bottle.
Lastly, I’ve struggled to...