Talk to Pediatrician on Milk And Semisolid

I want to know the ratio of milk and semisolid food for a 6 months old baby. My baby wants to eat more semisolids like (seasonal fruits and vegetables, banana shake, Rice khichri, sagudana cooked with chicken mince, rice cerelac, (all these food are given in purée form). He takes 3-4 ounces of any semisolid purée and sometimes 6-7 too twice a day and only takes 12-14 ounces of formula milk in 24hours. Is it sufficient for him? He is 6 months old and currently weighs 6.5kgs. Is this weight alright at this age ?? Pls guide..