Hi there,
I am sorry to hear you are feeling this way.
But do not worry! Don't force yourself or pressure yourself into doing something you're uncomfortable with.
There's still time to get to know one another, so a conversation will eventually come out naturally.
You're university students, so if you're struggling with starting a conversation, ask about their course, assignments, meal plans (you will find eachother in the kitchen pretty often), schedules, interests or ideas for their career paths. Furthermore, since the new flatmates are related, ask about their family dynamic or how do they find living together without their parents!
Lastly, remember that you're new flatmates might be as nervous as you about moving in and building rapport with others. So try to be patient and open-minded.
I hope I managed to help!
Best of luck,
Melanie
LSBU Rep