You can’t judge hay by sight hence the weighing daily. Sorry if you have to repeat but how long has he not done a poo? If he wasn’t eating enough he won’t - poo output is 1-2 days behind.
I would try to get him seen Monday. All the best and do let us know how you get on.
We didn't see him poo yesterday, but since then he's started eating a lot of hay and we've seen droppings all over the place today. We also weighed him today and he's apparently lost about 30g of weight, hence probably the reason he started eating hay again. Being hungry. Surprisingly, he's not too keen on veggies anymore. We're a little worried he might not get enough vitamin C since two of his favourite treats, peppers and cabbage, aren't interesting to him anymore. He seems to only be eating hay now, which should be a good sign... it's just he's eating it all over the place. New, old, trampled. It doesn't matter it seems like. Could this be a bad thing?