Suboxone while Working Part of the Year in Canada

I am opiate addicted but ready to quit the lifestyle. I am an American but I work in Canada for periods of up to 2 to 3 months at a time in the logging industry. In the past, I have had no problem scoring dope while up north, but this time I actually want to stay clean.

I am thinking about Suboxone but I have to go up north again in about 6 weeks. Will a doctor be able to prescribe me enough Suboxone to last me for my work abroad periods?

Will I have a problem getting it across the border? It would be ironic if I managed to avoid arrest after years of scoring dope only to get arrested for trying to get clean…