So here’s a little back story on my bunny. His names Jasper, he’s a Netherland Dwarf, he’s around 9-10 months old, he was born with a ‘bum leg’, but it doesn’t seem to affect him it just kinda sticks out to the side.
I got Jasper towards the end of January, and up until a few months ago he ate nothing but pellets, and then I learned that he should be eating hay, so from then on he had endless hay, pellets and fresh water.
It wasn’t until I noticed all the calcium build up in his urine, that I found out he should only be getting a limited amount pellets, so I completely cut pellets out of his diet and got him eating fresh greens. ( I was already introducing him slowly to strawberries and carrots and romaine lettuce, but he wouldnt try the lettuce at all, until someone recommend me to mash up banana and mix it all over the greens, now he loves lettuce!)
Also, I didn’t realize at the time his fruits were to be limited too. He was getting mashed banana or strawberries with his lettuce twice a day. When I found out it was only recommended to give them a couple slices of fruit only a couple times a week, I went straight to greens and I’ve slowly been getting back into giving him occasional fruit on his lettuce as a treat.
As of now his diet consists of unlimited fresh timothy hay, fresh water daily, fresh romaine lettuce daily ( I give him roughly 1 cup split between two servings. Breakfast and dinner.) Occasional fruit, and I’m trying to introduce pellets back into his diet because he loves them and attacks the container any time he see it, but I have only been giving him a tiny pinch of pellets every other day and we’re working up to the recommended 1/4 of a cup daily because he always seems hungry and that;s where the worry starts to come in…
He always greets me by standing up in his play yard every time its time for greens, when I add fresh hay to his bowl, he eats non stop for what seems like a couple hours and he’s been drinking water just fine.
I’m worried because for as much as he eats, he seems to be losing weight. I can feel his bones when I pet him, and today his poop has been a lot smaller than what it normally is.
I realize bunny’s have a high metabolism, but something seems wrong. I’m not aware of all the problems a bunny can have.. Before I cut off his pellets I was worried he might have had a UTI, so that’s the exact time I started him on the greens and banana and he seemed to be acting better and his urine went from milky to almost clear.
His cage opens up into a little play yard where he can roam and he also gets some time to roam around the living room, but usually when hes roaming in the living room, hes non stop running around and he gets these little spurts of energy and jumps in the air, or he’ll starting hopping really fast until he kinda flips onto his side ( I think its because his leg cant keep up sometimes).
He’s never been to the vets before, but I’m thinking I’m going to have to call Monday, although funds are really short right now.
Does this sound like a phase bunny’s go through or does it sound more serious? I’m very worried. 

As I’m writing all this, I realize I must sound like a terrible owner, but this is all new to me and I’m really trying to correct things I may have done wrong in the beginning and learn from my mistakes. I’m always doing research to figure out the best way to take care of him.