I have been producing music as a hobby for around 25 years. There were maybe two songs where I had to put some effort into practicing the parts I was recording. Maybe even just one.

The hard parts for me are finding good arrangements, making stuff sound good in a mix, writing lyrics, finding ways to do certain non trivial things in my DAW, reviewing what software I want to purchase, ... Stuff like that.

It doesn't involve much focused dedicated practice. It's just too general of an activity, and it's very easy compared to playing classical pieces on a piano.