My character is level 63 and uses melee weapons - mostly a one-handed ebony war axe.
Level a ranged ability, preferably archery. When the dragon lands somewhere out of melee range, or is hovering, you ought to have a strategy for hitting it other than "cast Dragonrend and then run over to it." That's too slow.
Destruction can work as well, but it ...
I can use the A Matter of Time mod to display in-game time, day, date, and year. This helps me to see how many years have passed in-game and I still have not saved the world (er touched the main quest).
I also use it to display real-life time.
It has a MCM menu that I use to configure everything including the position of the clock widgets on my HUD.
It is ...