my baby girl is 6 month 4 days old.She is only taking formula not so much ..Her weight is 5.5 kg.birth weight was 1.1 kg Should I start solid?? or after completing 6 months start.She is not rolling over..what to do

A. dear mum as baby has completed 6 months you should begin top food if baby was premature then begin top food after completion of 6 months this calculation should be based on expected date of birth and not the actual date of birth