How 2 make my sunnie like being handled

[iany]

A very affectionate bird, only 13 wks old, surprisingly quiet, already obeys the "step up" command really well. He/she refuses to stay on my lap or let me stroke or scratch him, whilst he doesn't bite at all which is great Charlie really fights to get out of my hands, I've read conures like going on their back and having their tummies scratched etc but not Charlie, is there somethng I can do to make him more "cuddly" any training information will be greatly appreciated. Ian.