If you consult different pediatricians then they will recommend 4 months and 
some recommend 6 months are the early feeding time to start giving cerelac to baby.
If you start with home foods, it would help your baby to get familiar to home made foods as the baby would develop a taste.
Sometimes some babies also start to take cerelac or sooji or daliya early on. You can decide how your baby reacts to these foods. Remember that some babies take longer than others to start to take food.
However don’t change whatever you give them regularly.
Please take proper consultation and support from your pediatricians.
The baby is beginning to increase the timing between feeds and introducing new foods is very important.
This can be started from three months of age, so that the baby learns how to accept variety in foods. Only one food should be introduced at one time so that allergies can be detected and the baby is able to digest it properly.
Milk, however should be continued along with the food. Cerelac is also good food for baby. Even if you give natural foods like mashed banana, potatoes, boiled apple and egg are also good weaning foods for babies.
