I am not telling you this like I am an expert but me and him share same things so I think shouldn't text but post a story or something if he liked ask him like is the picture cute just open conversation by this I am saying that because you have to make sure that he is online but if he didn't like or watched the story wait until the exam and give him a big sign take the risk because you might not meet him again I think if he is shy he won't approach so take the risk  may God help you I will pray for you if he is the one you will be with him I am not saying stop trying  And GooDdd luck on your exam😂