1.5mg Bupe after H - feel ok, can I take more?

[JoeBlowDonchaKnow]

I was on methadone and was supposed to be going a day or so without then starting buprenorphine, but used H for a few days instead. Went about 20 hours without H, was intending to start buprenorphine, but some H turned up. Smoked about 1/5 of a gram very quickly, then immediately took 1mg buprenorphine. About an hour later took another 0.5mg. Feel ok. Can I take more without fear of precipitated withdrawal, or could that still occur at a higher dose? Thanks.