Ragi porridge with salt is out of questions. Please never give such food to your dog. For growth you can add fine pieces of chicken along with pedigree starter . One thing you haven't mentioned is your dogs breed . Kindly mention the breed of your dog , then I will be able to suggest more home food for your puppy .

He is just 54 days old. Right now you can start with pup starter soaked in warm water to make it soft or even transition cereals for pups. Several small meals during the day. Don’t indulge him in home made food for a few months.

Please stick to starter or puppy food for atleast till 3.5 months .later you can introduce boiled eggs and Rice or Raagiporridge slowly and later slowly boiled meat..Don't change food suddenly at  any point of time..pls consult a Veterinarian offline or online to get more details about their Nutrition, quantity and Diet chart etc as It varies from Individual pets requirements.