Trains in Kosovo

Good morning everyone,

I’m coming to Kosovo in May, I land in Pristina where I’ll stay 3/4 days and then I want to move on to Peja.

I’m a big fan of taking trains and my guidebook says there’s a train at 8.01am but I’ve been looking online at the Trainkos website but I can’t seem to see timetables to confirm that there is a train.

Is it possible to book trains online? ( I’m in England)… or is it not really necessary to book in advance?

Thanks in advance for any advice.