The outfit I did PPL with had a PA28 checklist (which I use to this day) that instructs to start engine on the fullest tank, then change tanks for the power check, take-off and the first 30 minutes of flight. Thereafter, change tanks every 30 minutes (noting the time at which you do it, or doing a FREDA check every 30 minutes). Obviously, that procedure can be amended as necessary if collecting an aircraft with less than full tanks and/or a fuel imbalance
That's an easy way to prevent fuel starvation while having a full tank on the other side (yes, it has happened before)!
Oh, and when changing tanks, always set fuel pump "ON", then change tanks, then switch pump "OFF"
and check whether the fuel pressure holds. If it doesn't, then revert to the other tank - and amend your endurance accordingly.
Cheers
