N.P.
since you are already using the Dry Max I will just tell you why it is the best - my daughter did a science fair project where she compared various types of diapers absorbancy and wetness feeling. Dry Max felt wet soonest but absorbed the most. It absorbed dramatically more.
And I see you also went up to a larger size for sleep.
Since neither of these seemed to work, I have a different solution. Take a women's sanitary pad and put it across the belly portion of the diaper, hopefully this will absorb the extra wetness in the area that needs it the most.