I'd chosen Japanese as my Special Subject for my BA degree at SOAS (School of Oriental and African Studies, University of University).
Those were the days before free access to recordings on the internet. Language tapes were not that readily available in the West in the shops, or not cheap.
I managed to get a very kind and helpful technician at SOAS to make me a set of the tapes used in the language lab sessions.
No need to sit down and focus totally on the recordings. Just play them at home as background sounds when doing quiet tasks like prepping for a meal (peeling potatoes or onions), ironing, or mopping the floor.
No need to repeat after the recordings if you're doing it as a listening comprehension exercise, but it'll help if you try and make the sounds yourself as well, because to make the sounds yourself, your brain will be working harder, which will let everything sink in deeper.
No need to match the speed of the recordings. Never mind if you can't repeat the sentences as quickly as in the recordings, just do whatever you can. You'll find that, with time, you'll be able to utter longer and longer strings of sounds as your brain and tongue become attuned and remember what's gone before.
As I now keep saying to my Mandarin and English students when advising them on how to up their listening skills: it'll be like listening to music. Once you've listened to the same piece enough number of times, you will be able to hum it yourself, or spot a note that's played/sung wrongly, say.
(London, 1978–81)