It's really common to go through what are called mid PhD doldrums or blues. Either in 2nd year if you're full-time, or the part-time equivalent as I went through. They are very tough!
The way I dragged myself back was to make a long list of lots of short achievable tasks I could be getting on with. Then I would pick the most appealing task (or least unappealing usually!), and start with that, do it, then cross it off the list, and move on. Crossing things off the list really gave me a boost, and I managed to get back into the swing of things that way.
Also I would recommend not comparing yourself to others too much, that doesn't always help. And supervisor feedback can at times be really tough. It will be again before the end. But you can get there!
Also even if you are studying for just a couple of hours a day that's a lot during the week. I was managing on at most 5 hours a week by the end, in 1 hour chunks spread throughout the week. But I'd use my to-do list method to get on with something, however little time I had, and so still make progress that way.
Good luck!