Good job! Kittens that easy are very easy to socialize, but you need some Personal Protective equipment.

If you have a sweatshirt and leather gloves, this is good for kittens. Using the gloves, pick up the kitten and hold it up to your chest near your heart. Your heart beat starts to calm them down.

What I do is I cradle the kitten with one arm, and if I think it's safe I'll use my teeth to pull off one glove and (carefully!) pet the kitten.

Mouse (foster) was a 12 week old terror and within 7 days was a purring mushpie.

Good luck!