N1ql subquery to get count of records

SQL++
,
1

Ive docs as below with created date in my bucket

{
 "id": "1234",
  "created": "2020-03-11T17:28:49.597838+11:00"
}

{
 "id": "9872",
  "created": "2020-02-04T17:28:49.597838+11:00"
}

{
 "id": "9892",
  "created": "2020-02-12T17:28:49.597838+11:00"
}

Now, I need to Select count of records by created (previousMonth and currentMonth).

Expected result

{
'prevousMonth': 1,
'currentMonth': 2
}

Currently , Im using two separate queries and it works. How to use these in subquery to get a result as above.

SELECT COUNT (d.id) AS previous
FROM `default` AS d
WHERE d.created >= '2020-02-01' 
AND d.created < '2020-03-01'

SELECT COUNT (d.id) AS current
FROM `default` AS d
WHERE d.created >= '2020-03-01' 
AND d.created < '2020-04-01'
2

Option 1:

SELECT  prevousMonth,  currentMonth
  LET  prevousMonth = (SELECT  RAW COUNT (d.id) FROM `default` AS  d WHERE d.created >= '2020-02-01' AND d.created < '2020-03-01')[0],
            currentMonth = (SELECT  RAW COUNT (c.id) FROM `default` AS   c WHERE c.created >= '2020-03-01' AND c.created < '2020-04-01')[0];

Option 2: each month as separate document

SELECT month, COUNT (d.id) AS cnt
FROM `default` AS d
LET month = DATE_PART_STR(d.created, 'month')
WHERE d.created >= '2020-02-01' 
AND d.created < '2020-04-01'
GROUP BY  month;