Hello,
These are early childhood cavities, these are not reversible, but you can stop further spread with proper care.
Visit a pedodontist (children specialist) for a check up and get the cavities filled.
Next Steps
Maintain good hygiene - brushing twice a day
Keep the child hydrated, rinse after meals.
Avoid bottle feeding at night, during sleep. Encourage use of cup/glass.
Avoid frequent snacking, especially foods with high
sugar content