I agree with Pat on the 15 mins or it's gone.
I disagree that it always does the trick. I am 56 years old. I have used that type of training for my entire life, my mother and grandmother before me. And it worked every time on every dog… til Sayblee, who never cared that much about ANY food, even treats. Ever. She ate enough to stay alive on her own. Then at around 5 life became hell when she lost so much she looked skeletal-- every testing possible, nothing. So store this thought-- if down the road that does happen, cyproheptadine might save your sanity (or they may have a new drug then but cypro is cheap, mostly safe for most dogs <some issues="" if="" kidney="" disease="" or="" heart="">and is a simple antihistimine). I spent nearly 6 mos putting food in her mouth, she'd then swallow. While it only took me a few mins to force feed her twice a day, it was stress. Cypro and suddenly she had an appetite and ate all her food on her own, even 2 yrs later when she got cancer and was going through chemo. Of course I hope your dog never gets that bad and that the "eat it or it's gone" works.. but if it doesn't, at least you'll remember you are not alone.
But please do what Pat advised.
And OMGoodness utterly adorable pictures! :)</some>