Infant Diet for 3.5 Months Old infant

My baby is 3.5 months. My paed has asked me to start Cerelac wheat for her. He asked me to continue for ten days then next 10 days banana with Cerelac. Then later after 10 days orange juice with banana and Cerelac. My baby is normal in weight and already started teething and drooling. Is it advisable to follow this routine for her as paed suggested. Please advice Infant Diet?

 

Infant Diet for 3.5 Months Old infant
Paediatrics