Another choice for a touch up is a barber's hone (swaty), or a coticule (use with with water only for a touch up). Note, I generally need to touch up after a few months of use, so it sounds like you are due.

I have read that using pasted strops will eventually put a curve on your bevel, so at some point you would need to to rehone the razor (more aggressive work vs. a touchup). I don't use pastes strops so I don't really know how long that would be...

-Chief