Anxiety about birth for the 2nd time

So I'm 31 weeks pregnant with my second bubba, almost 5 years ago I gave birth to my beautiful daughter, I was induced at 40+6 with her, I had no water inside at the time of time birth so we had a dry birth which lead to me being cut down there.. This pregnancy is such a different experience, I'm having a BOY for one, and then I'm suffering from a short cervix 15mm. I'm on light bed rest and activities. I'm having so much anxiety about what's going to happen, when he is going to just decide to come and everything!!! I'm struggling mentally and just don't know how to just chill out about everything 😢 any advice will be appreciated xx