As I understand it this is not something that is short term fixable.. you really have to put some long term effort and wait for the effects to show up. As it was explained to me ... if you can keep the pores clean the eventually shrink as they are not constantly being stretched open by dead skin/dirt/etc.
Mostly it's a combination of cleaning the areas with large pores a couple (2-3) times a day with at least one of those being a mild exfoliation pass. And every few (possibly evey other) days hitting the area with a stronger exfoliation.
You can help keep them somewhat cleaner during the day by using an astrignet/toner after you clean to shrink the pores temporarily.
Sugar scrubs and the like for mild.
Chemical (Glycolic Acid,Urea,Salicylic Acid)
Might consider also changing to a non-soap/beauty bar in the was...
Given the size of the area you are talking about.. maybe witch hazel as an astrignet.
Probably the best bet for the money on that scale.