@JayZhang - a few thoughts.
the treatment requires a good clean high grade RSO. the product you acquired may not be up to grade. you need to be able to trust your supply.
while i understand it is not presently a solution for you, many find growing and producing their own to be the most effective. they are not legal, but you may be able to reach out to a local compassion club. there were a number in vancouver, i would suggest reaching out locally for help and knowledge.
as
@Nunyabiz mentioned, you should use both a cbd based and a thc based RSO. there are many newer studies showing a dual approach being more effective.
don't forgo standard treatments. the most effective protocol has been shown to be combining an RSO program with regular treatment.
time. the RSO protocol takes both a little time, and needs to be kept up. it is not exactly immediate, and needs to be continued for the duration of the treatment, and even beyond. the period it takes varies from patient to patient.
note
@RXOIL is still using a maintenance dose two years after his fantastic results. the RSO protocol is not something you do once and are done with. in many instances there are complete lifestyle changes that take place. you may wish to plan for that.
keep at it. sending good karma your way .