An ILS is an ILS. Every time I fly I am practicing. Any distinction is meaningless.
I take it you know how to fly?
I am not being rude - just pointing out that you are practising a pre-existing
skill.
Same with an ILS - if you know what you are doing you are practising.
If you don't know then you are learning.
On your own, in controlled airspace = not a good learning enviroment.