How can I easily release one drop of liquid dish soap at a time?

I really only need one drop of dish soap for most purposes. Using the supplied spout a little trickle happens, and that is a waste of soap. Soap is cheap so this isn’t a major issue, but why waste?

I need one drop at a time.

Should I :

a) find a tiny gauge needle and poke a hole in the plastic bottle, after I stop up the top?

b) use a water bottle top with a pinhole on the existing soap container?

c)switch containers to something that is designed to only emit one drop at a time. Maybe a foaming container.