The frenum of upper lip in your child’s case is not the reason for inability to feed. It’s usually the tongue tie due to frenum of tongue being attached that results in poor breast feeding. Anyway she is 2 years old now. According to the picture it looks within normal limits. If needed can be corrected with Lasers.As for the protruding look , it’s not possible to guide you with this photograph.The child has to be seen clinically to determine if upper teeth are protruding or the lower jaw is not grown enough....It’s not an emergency . Please wait until this covid situation is in control & then visit a dental clinic .
Health Tips
Allow her to chew on healthy food. Good chewing helps in balancing jaw development. Also check if there is mouth breathing.