I've adopted a black lab which was just 30 days old and was very weak,please help?

I've adopted a black lab which was just 30 days old and was very weak. I've tried to feed her with various type of meals from dog food starter to mashed rice in chicken stock. But she doesn't eat anything. Finally after browsing a lot over the internet i came across the homemade meal (brown rice, chicken, carrot, sweet potato, cheese) all mashed into small chunks. Fortunately, she relished it and is on the diet for past 2 days now and her stool is solid again. My major concern, is this meal sufficient for her growth? (personal opinion: it might not be). What more can I add as supplement of calcium and protein to her diet? Her Vaccination is due by May 5th and my concern is to make her healthy before i get her vaccinated so that her body can take the dosage! Her likes: Boiled Egg white; homemade meal; boiled chicken breast (shredded); coconut water; cottage cheese. Her dislikes: curd; curd + dog food; Glucon-D; boiled rice; curd + boiled rice; moist dog food; Foods I'm not feeding her: diluted milk; cerelac; chew sticks; Your replies will certainly reflect your love and concern. :) Thanks.