IMO you'll find that as you gain experience your technique, both stropping and shaving, will drastically improve and the time between honings will gradually get longer. What you're exoeriencing now is pretty normal. The best advice I can give you is if your razor needs a touchup do it. There is no point in suffering a dull edge just to eck out a few more shaves.

BTW - how many laps do you strop before shaving?