How do you make a sweep that tapers

Morning,

I'm trying to make an "S" hook that starts at 3/8 dia that tapers to a point.  I've created a sketch with my 3/8 dia circle and I have a perpandicular sketch with my "S" shaped hook.  Now I want to create a sweep that starts at 3/8 dia and ends in a point, How do I accomplish this.

Thank you all so much for helping me, you have been a great resource.

Steve

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