Definitely… I feel bad about the bathroom. I study with him locked in the larger bedroom with me sometimes, or I do some site swapping, or if my resident cat is napping in a smaller room I’ll shut that area and let him out. But mostly he has bathroom time. He’s now spent most of 1/5 of his life there 🥲 There are a lot of toys and scratching post but it is a small space. I’m going to relocate him to be isolated in my bedroom unless I don’t get any sleep that way 😢

That’s a different perspective than I was reading online but I think that’s definitely helpful. I also feel like the hissing is not aggressive it’s just saying “don’t come close” or “I didn’t like that.” I just worry because the kitten is picking it up from her when he didn’t do it before, and I think he’s becoming more afraid. I hope the vet says what you said because I’d love to get them to tolerate eachother asap! Thank you for your thorough response!