Do you know much about his history? Was he a stray? Fostered?
He may be overwhelmed by his new home. I always recommend that new cats or kittens are set up in ONE room in their new house and allowed to adjust from there and explore at their pace. Ideally this will be the final location of their litter box, but that isn't always an option for some folks. Can you try isolating Freddie in a bathroom, office, bedroom, etc so that his transition is less overwhelming? Then come into his room, sit down on his level as you're able, and speak to him quietly. You can just talk or read a book out loud. I would advise doing this as much as possible, as your schedule allows. Offer him wet food or stinky fishy treats--whatever he likes best--and reserve them as a reward for approaching you. Once he feels comfortable eating wet food or treats close by you, then start to reach out to attempt to touch him. He will learn that hands are not a threat, in fact, they are associated with yummy food and safety.
Shy kittens are a bit of work but many of them come around quickly once they realize that hands aren't for hurting (or incessantly giving medication....some kittens from shelters aren't able to be handled frequently other than for things like medications and vaccines--this can lead to unhappy associations with being touched). But don't let him roam a larger area than one room until he is happy to come to you and be petted--the stress of chasing a cat or kitten around the house to corral him into a carrier for a vet visit or to give medication or flea treatment can really set back a relationship of trust and understanding.
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