Dont do that...go on the Brooks site and look up what they tell you. They strictly say dont over soak with water or linseed.
What they made up their solution of proofride and time, so that you would go off and break it using some other theory to get you into a new one sooner???
I'm using a B17 Narrow that my dad used when he was in college (I'm 22) and all that's ever been done to it has been Proofride and time. It probably has 15,000 miles plus (possibly way plus) and many others have done the same thing. What the other solutions do is stretch the leather prematurely and then you're stuck and have to start using the adjustable nut to get the tension back. Just go ride it and enjoy it!