Yes. That will prepare your mind for more advanced usage of the element.

[ It will take centuries of study to be able to summon meteors like Zhongli does, but Jun has a different advantage. The ability to command a power that did not exist on Teyvat at all. ]

Since you are attuned to Geo, you might also find it useful to employ your command of the earth when you wish to retrieve any natural resources. [ Like... mining! ] Metal and gemstones have different temperaments. Learning to coax them from the surrounding rock will give you an advantage.