personally, i don't think there is a need for adjustment in your situation. for a person to fit right in, it only takes time, and if you want, a little effort to reach out. college is not like high school. everybody is friends with everybody. well, with some exceptions, some people are just born trolls. but trust me, university is for everybody regardless of age.eventually, u will gain some friends, and get comfortable inside. u wont even feel older. but if i were on ur shoes, id strive to look young. as i always do. ^^ cheers. goodluck dude. ur making a brilliant step.