We just got a new kitty after my other died. I thought I was doing a good thing by adopting an older cat but he's so frightened. Hasn't come out since we got him two days ago. It makes me miss my old cat more - I really wanted a companionable cat, not one that just hides all the time. I'm going to be patient, but I feel a little guilty for being disappointed. Sorry to bug you with it!
let me tell you about a certain Soft Boy
his first few days were spent underneath a bed. in the following two months, it was a major event to see him in the hallway. we would freeze so as not to spook him, & be forced to stand like statues until his courage broke and he scurried back into hiding
after 2 years of living with him, he’d still spook & run if I reached for him in the wrong way. but he’d also be waiting outside the door during my baths, ready to greet me with horrible screech-chirps & wind between my legs once the door opened
I could give a similar story for Pangur. she was stuffed to the brim with disease when I got her, & the daily process of medicating made her run from me hissing. nowadays I can flop her about like a doll
right now you’re building a relationship, and that doesn’t happen overnight. cats are prey animals, so your boy’s instincts are screaming at him to ‘be careful, be careful, don’t get eaten, run if you have to’. from his perspective, the hiding is quite understandable.
be patient with him, be kind, and over time you’ll be rewarded with a companion :)