This is borderline between deficiency and insufficient.
You can revert back to the treating Pediatrician or book an online consult to review history and background.
Then child can have treatment daily dose of VitD3 or once a week high dose VitD3 for 4weeks and then repeat VitD3.
Make sure diet has atleast 2glasses of milk daily for
calcium requirement, else if calcium consumption is low that will also need to be replaced.