13 drops twice a day?!? That's awesome! I'm still only at 10 (X3). I've had quite a few battles with nausea so I had to tone it down a bit, but ya my bb is basically completely gone. I had pizza tonight and feel fine. A couple of months ago that would have been a disaster.
Something you might want to try as well is mixing like 4 drops up in a shot glass first thing in the morning and then mixing it with maybe half a shot of water (or less) and then swishing that for a minute or so (don't swallow). I did this for a while as well as drinking it down. I actually killed a canker sore in a day doing this. I hope it works for you too.