When can I use pore strips after my rhinoplasty?

I am 3 weeks post-op and had an open septorhinoplasty with osteotomies, as well as tip reduction and a graft. I currently have no pain, my scar is healing really nicely. I even blew my nose for the first time today! When can I use a nose pore strip to remove some of my blackheads? I had a lot of dry skin after my cast came off, but I have been moisturizing and the dryness has completely cleared up. My only skin issue now is a ton of blackheads occupying almost all of the pores on my nose,