Which format and Pokemon?
I don't have too much experience, but depending on the Pokemon, some sort of berry (like Sitrus Berry, or Leichi/Salac with Endure) or White Herb with a stat lowering move like Close Combat seem to be good options. Something like Focus Sash and maybe Weakness Policy might be able to work, but I don't have too much experience, especially with Doubles, and again, it depends heavily on the Pokemon and format.