Hi all! I adopted my bunny from a shelter last week, still getting the hang of how to modify his habitat. A few questions:
1. Ramps or steps? Or just a matter of time?
Sometimes it appears like he spent the entire night/day on one level (i.e. the third “main” level or even the fourth “top”level — see photo below. We already lowered the top level by 2 inches. The height of the levels are: 9.5 inches, 9 inches, 8 inches.
He seems to have no trouble hopping up to the different levels, but he’s either afraid of the height to hop down or forgot how to get back down to his litter box. He’s definitely jumped up and down the levels with us watching/some enticement, so I think he’s capable.
The shelter kept him in a smaller ~2×3 cage for a few months (with playtime), and they told me he’s not much of a jumper.
I’ve done some reading, and seems like people are saying it may just take time to get used to his surroundings, and that ramps can take up a lot of space. To be frank, I’m not even sure how to make an adequate ramp with the right gradient from the second to the third “main” level.
Should I build a ramp ASAP, a step, or should I give it a few more days to see if he gets used to it?

2. Litter box
There’s got to be a more efficient way than how I’m cleaning the litter box, haha. I pick out the hay…then I scoop up all the poop and wet litter (by hand, with a glove). I was going to buy the BinkyBunny litter screen, but a person I met at a shelter told me it’s not good for his feet (even though I showed him the pic and how narrow the grids are). I am thinking of buying a “sift” and just throwing the entire box over the sift so the hay separates, then taking out the wet litter and poop in the remaining portion. Not sure if others have advice.
3. He doesn’t drink much from the bowl
The shelter had him drink from a bottle, and maybe he’s not used to a bowl, or is it too big? He drinks a little but certainly not the amount he’s supposed to. All my reading seems to say a bowl is better than a bottle, but should I purchase a bottle so he doesn’t dehydrate at least?