I am new to power automate. I designed a user request form in Power Apps and designed a flow with power automate. I intended that when the user submits the form a mail should be sent to his line manger informing to take action and in parallel a mail should be sent to the user that his request has been submitted. This form will have three layers of approval and at each point when it is approved or rejected, the user should be in copy. I tried creating the flow but at each time the form is modified, the first mail that was sent to the user and his line manager is triggered again. I need help on how to ensure that this does not happen.