Too big keikogi
In most of my aikido trainings my keikogi is getting seriously annoying. The belt doesn't hold the top part even when doing simple warm-up, the sleeves are 5 cm too long (fine, that's easy to fix) and its generally just too large for me. The pants would fit 2 or 3 myselfs in just nicely, they almost fall off. I am only 14 but still 180cm, which I guess is the reason for this.
Is there a way I could tighten the belt or something to make my outfit not fall when practicing? Its getting seriously annoying when I have to fix my gi every 5 seconds even when doing breathing excercises, thus breaking my concentration. Of course I could buy a new gi but that would be another half a year-worth of money wasted.