The widget ("float_time") applied to these fields in list and form view does not support rendering millisecond. Therefore, no, there is no way to change this behavior without modification.

You could remove the widget from these fields if output of a float value representing minutes is sufficient to you:

• remove widget-attribute (or replace with widget "float") and
• apply digits-attribute with a precision to your liking, here 6

This can be done in Studio:

You can find (most) possible widgets and options here: https://www.odoo.com/documentation/18.0/applications/studio/fields.html

If this is not to your liking you will have to create your own widget or potentially extend the existing one with something like a displayMilliseconds-option similar to the existing displaySeconds feature, which can not be done in Studio.