Use the advice that I gave Lizzie that she mentioned in the post above. Its easy for them to swallow and digest. You'll have to do it everyday and occationaly skip a day. It will be stressful for you and your frog, but it may be the best bet for you right now. Use the booster that she mentioned and also go out and buy Fluker's Repta-Aid. Its for sick and malnurishe reptiles and amphibians.

Keep us posted.