Babies don't have a right amount of sleep. Some sleep more some sleep less. They sleep whenever they want, and will not sleep over an exact interval that you want them to, that some misinformed blog or book says is the right amount.
You can track it but info won't be actionable in the end. Those people who believe that tracking will be used for some purpose will stop doing it after seeing that it amounted to nothing for their first child.
Some people just need to have an app in their hand in order to feel that they are in control, though. That's something to work on. Just acknowledge you're not in control, and put the phone down.