yes, you can overfeed if your bp continues to take food whenever. for instance, my one male will eat anything, any day, and any time if i let him, so i be sure to keep him on a constant every 7 days feeding schedule so he does not get obese. And my other male used to be fed every 8-9 days or so because i noticed he did not have that thick muscular feeling but rather a fat and pudgy feeling so he had to go on a diet he bred this year and went off feed for over 100 days, and he lost a lot of weight, so i feed him every 5 days just to get him back up to weight. as long as your bp's are on a feeding schedule and you keep track of their weight, you should be good to go. i wouldn't worry too much otherwise.