i was always taught by the great vine to never have the dog weight drop under there hunt weight. you dont want to drop the weight quickly, you want to drop weight slowly but effiently. dropping to fast will hurt the dog because it's not used to performing at a weight as such, but giving him/her time and dropping weight slowly will get the dog used to being at the weight for awhile and performing at that weight.

remember the dog will increase weight on his own naturally but it may be the workout. make sure you have rest days, and dont overwork the dog. when are you feeding? have you wormed the dog out before the keep?

also be consistent wilth your workout and feed. changing the workout, workout times, times