I am using Odoo Community, v14 and have made a custom module. 

I have a form view, with child records displayed at the bottom of the form (One2many relationship between parent and child records).  This is similar to an order header with order lines, where the child records are displayed as lines on the main form.

When I click on the child record, a form displays that record.  That form has a button to record start of an action, and 2 fields (a date field and a status field) are updated on the child record. The display of the child record shows the fields updated.

When that form is closed and I return to the parent record, the display of the child records on that form is not updated unless I refresh the page.

I would like to be able to trigger an update of the page or a re-display of the child fields on that main form, so that the update which was just done is immediately visible without a manual refresh.

Any advice on how to accomplish this?