Advice with hamster taming much appreciated!

[bageleggandcheese]

This is my (and my hamster Bagel’s) first time on this forum! I recently got him at 13 weeks old and so far it’s been 5 days of him moving in and getting himself familiarised with the enclosure. After some observation I noticed he’s very nervous and freezes at the smallest sounds, which is understandable coming from his previous conditions but he’s especially hesitant to interact with me. I’ve been doing the scent tissue trick and have been talking to him when he’s awake, though today i regrettably attempted to stroke him a little which scared him and caused him to scuttle back into his burrows. Will he forgive me I might be a little impatient but so far I’ve seen little progress from him getting used to my presence. I’m worried that since I got him relatively old it would be quite difficult for him to fully warm up to me or even get on my hand voluntarily… Anyone else has a similar experience with a big aged skittish hamster, and how long did it take for your hamster to really get used to you? Any stories would be greatly appreciated!