Can a 5mg Bisprolol tablet be cut in half?

I had read that some people can get by with less bisprsol but 5 mg is often where they are started by a doctor. I have been cutting my 5 mg bisprolol in half the past 2 months (been on it for a couple of years) and am monitoring my blood pressure carefully. So far it has been great -even better than before and I'm feeling better. I see the Dr in another month and we'll see what he says. As blood pressure is a silent killer it needs to be carefully monitored if you do this. Best wishes.