How to find child and grandchildren tables of a main table by order

I have this script to return all child and grandchildren tables with their level from a database . How do I change this if I only want to return the child and grandchildren tables of a particular table .

;WITH dependencies -- Get sp with  dependenciesAS (    SELECT         DISTINCT procs.NAME AS Tablename                    ,OBJDEP.NAME as Depends                    ,sch.name as schemaname    FROM    sysforeignkeys a        INNER JOIN sysobjects OBJ ON a.fkeyid = OBJ.id        INNER JOIN sysobjects OBJDEP ON a.rkeyid = OBJDEP.id        inner join   sys.objects procs  on a.fkeyid = procs.object_id        inner join sys.schemas sch on sch.schema_id=procs.schema_id    where obj.type='U'    and OBJDEP.type='u'    ), no_dependencies AS (    SELECT           obj.NAME AS Tablename        ,sch.name as schemaname     FROM sys.objects OBJ     INNER JOIN sys.schemas sch on sch.schema_id=obj.schema_id     WHERE  NOT EXISTS (        SELECT 1         FROM dependencies k         where obj.name=k.Tablename         and sch.name=k.schemaname) and type='u'    ), recursiv -- recursive CTE to get dependenciesAS (    SELECT Tablename AS [SP]        , CAST('' AS VARCHAR(max)) AS DependsON        , 0 AS LVL         ,schemaname    FROM no_dependencies    UNION ALL    SELECT d.Tablename AS [SP]         ,CAST( d.Depends AS VARCHAR(max))         ,R.lvl + 1 AS LVL         ,d.schemaname    FROM dependencies d    INNER JOIN recursiv r        ON d.Depends = r.[SP]    )SELECT * FROM RECURSIV  ORDER BY LVL  option (maxrecursion 0)