If you practice it daily, after about a week pushing that to 60 minutes shouldn't be too hard, it's not physical after all. What's important is to have a great setup so that it's super comfy for you to stay a long time without moving: hot, background noise should stay low, use some mat or pillow to sit on, and here you go...

I think I’ll need to work up to it over longer than a week, I find it super hard to sit still. But I shall take on board your advice! Thank you!