If you're going to feed multiples (I do every week), you still want to feed in one sitting, once a week. The way to do it is to put the first mouse in, keeping the second close by. Watch your bp as it eats the first mouse. When your bp is finished swallowing the first prey item, he/she will generally start tongue flicking again. At that point, drop in the second mouse and continue supervising. In my experience, the bp takes less time to hit the second mouse than the first.

Wait 5-7 days and repeat...