My daughter is 4 months old now but belly button is still not fully recovered pls advice

A. umbilical granuloma / umbilical polyp they are usually remnants of umbilicus post delivery. usually does not require any type of madjor treatment except neosporine powder application or t-bact cream application and maintenance of hygiene and proper cleanliness. if itd continues to persist beyond 6 months of age requires surgical intervention like quarterization or ligation removal