The correct amount of the herbal for doughy crops is:
1/2 tsp baking soda
1/2 tsp ginger powder
1/2 tsp cinnamon powder
1/2 tsp chili powder
squirt of lemon juice
2 Tbsp water
Give the ENTIRE amount 1/2 ml at a time until you've given it ALL. Then massage the crop well (I usually start massaging as soon as I've gotten a ml or two in and then with each ml after that til it's all been given), this is what helps break it up and hopefully make it passable. And you do this 3 times a day. I've had success clearing doughy crops this way, HOWEVER it may just recur depending on what the underlying cause is. It could be a partial blockage and would resolve in the event it was eventually passed. But there are diseases that can cause everything to slow down (cancer, tumors, Marek's, infection for a few) and that can cause the doughy crop, and it will recur as long as the underlying condition is there. And depending on the cause it can be very hard to diagnose. Most blockages that are below the crop are not really treatable unless it's a blockage that is able to be passed. An x-ray might give a clue, but I know you said you didn't want to do the vet. So in that event I would continue trying to clear it and monitor the birds weight. If things don't change and she begins to lose weight, or develops further symptoms you will need to consider other options. Feeding only water soluble foods would be a good idea, and mixing water into her feed will help soften it up, give her more hydration, and hopefully make it easier to pass. Be careful with the yogurt, if it's sitting in the crop it can become sour crop, the lactose will encourage yeast growth. Best of luck.
