milu needs to goes to the groomer once a month. she can go without longer if they cut the hair a little shorter, then it an probably last a little longer.
i think it really just depends on how you like the way your baby to look. i like to keep milu's hair short. so i take her more often.
you can always just take her once every two months for the full grooming, and take her in between just for the nail trim.
unless you can do that one yourself which would be even better!