I used to sleep with a tiny fleece square (or keep it tucked in my shirt all day or some other way of making it smell like me) and then put the fleece in my girls' sleeping pouch during the day. That way, even if your suggies aren't ready to be carried around in a bonding pouch, they are still smelling you and associating your scent with pouch and warmth and safety.
Another thing I did with Sydney, my timid girl, is I'd leave like a trail of her favorite treats on my hand and up my arm. I'd open the cage door and just kind of hover my hand near it. After a while, Syd would be so tempted/distracted by the food that she'd be out the door and clamoring all the way up my arm without even realizing that 'hey, this is a big scary human I'm crawling on'. The biggest struggle was making sure Addie, my adventurous one, didn't make a break for it and run off to explore while the cage door was open ha. (Syd is VERY food motivated though lol so I don't know if this would work as well for other suggies).
Neither of my girls are really biters so I don't have any personal experience tips for that, but I've heard from quite a few parents of nibbly gliders that making a sharp 'psst' sound when the sugar glider is trying to bite you helps to startle them out of that kind of behavior.
Good luck with your new gliders!! <3