Oracle 18c

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CREATE TABLE tab( jsdata VARCHAR2(4000) check (jsdata is JSON) );
INSERT INTO tab VALUES('[ { "product":"Vegetable", "name":"Potato", "price":"$60.00" }, 
                          { "product":"Fruit", "name":"Mango", "price":"$3.30" }, 
                          { "product":"Milk", "name":"Milk", "price":"$1.08" }]');         
1 rows affected

--# in this case reduced from 3 to 2 elements.
SELECT JSON_ARRAYAGG(
                     JSON_OBJECT('product' VALUE product, 
                                 'name'    VALUE name,
                                 'price'   VALUE price) ) AS "Result"
  FROM
  (
   SELECT t.*, ROW_NUMBER() OVER (ORDER BY 1) AS rn
     FROM tab
    CROSS JOIN
     JSON_TABLE(jsdata, '$[*]' COLUMNS (
                 product VARCHAR(100) PATH '$.product',
                 name    VARCHAR(100) PATH '$.name',
                 price   VARCHAR(100) PATH '$.price'
                )
     ) t
   )
 WHERE rn <= 2    
     


Result


[{"product":"Vegetable","name":"Potato","price":"$60.00"},{"product":"Fruit","name":"Mango","price":"$3.30"}]