I agree that getting rid of the pills is the safest option. But I know how hard that is. I think my T has given up asking now because he knows that I won't... Whenever i have given them up I've always started hoarding straight after, they are my safety net!
It's a dangerous game to play though. I haven't used pills as SI for a long long time now, only for actual attempts...
Make sure if your thoughts do go down that route to tell him, so that he can help.