Asking about progress towards a goal:
How are you getting on?
Gimana perkembangannya?
I've only just started.
Baru mulai.
I've almost finished.
Hampir selesai.
Asking about someone's progress towards achieving or finishing a task:
How is your learning Bahasa Indonesia coming along?
Gimana belajar Bahasa Indonesianya?
It's coming along well.
Lancar.