Hello dr. My 4-month-old baby only lies straight. She does not even show interest in turning around or rolling. What should I do?

A. Some succeed, but most take another month or two. By 4 months , many babies can roll from their stomachs to their backs. At 6 months, many babies begin rolling from their backs to their stomachs. If a baby cannot roll in either direction by 6 months, it may indicate a developmental delay or underlying health issue.