C3 chart - How to set X-Axis a DateTime interval 1 week?

Question

I am very new to building charts with c3. I've done a search, but I could not find an answer. Could anyone help?

How can I force to set in X-Axis a DateTime interval of 1 week, if my dates start with 01-Jan-2022 and end with 01-April-2022, then it must start with 01-Jan-2022 and then 07-Jan-2022, 14-Jan-2022, 21-Jan-2022 and so...

var chart = c3.generate({
data: {
    x: 'x',
    columns: [
        ['x', '2022-01-01', '2022-01-07', '2022-01-14', '2022-01-21', '2022-01-28', '2022-02-04', '2022-02-11', '2022-02-18', '2022-02-25'],
        ['data1', 30, 200, 100, 400, 150, 250, 300, 350, 320]
        
    ]
},
axis: {
    x: {
        type: 'timeseries',
        tick: {
            format: '%Y-%m-%d'
        }
    }
}});

Above, I have given one sample example. Here start date is 01-01-2022 and the end date is 25-02-2022. So how can I pass min range is 01-01-2022 and max range is 25-02-2022 with an interval of 1 week