i would go with your DR ! he/she has a better idea about your child's health than i do , work with your DR. many mums on her have started solids early for many different reasons , maybe they can offer advice .
in my experience we were told to introduce solids early as Ryan was very hungry , it turned out that Ryan was gulping his feeds to soothe his throat due to reflux , it wasn't that he was very hungry ! after starting solids , his reflux was no better and we had the extra problem of constipation .
i don't know what the reasons are that you are starting solids early but i would discuss these issues with you DR