9 weeks post breast reduction and feeling very frustrated. How long does it take for tunnelling wounds to heal?

I am 9 weeks post op from breast reduction surgery. I currently have 9 open wounds along my t-line. Two of them that have tunneling. I see a wound nurse morning to clean out and repack the wounds because the pain is so bad I can't do it myself. My question is approximately how long is the healing process? Will this all be over in a month, 2 months or longer?