How to write a short message to my brother in prison?

Thinking about writing: tell my brother about his family, let him not worry, make a good reform in it, try to reduce his sentence, and come out to return to normal life as soon as possible.

Text:

Hello, I'm my sister. How have you been recently? Did you receive all the money you called on time? It's quite cold in Beijing now. Have you read the book sent to you? Winter is coming. Do you have winter clothes in the prison? For example, autumn clothes, pants, socks and quilts.

Sister misses you very much. I know you must be asleep at this time. I don't know if you're in there. Whenever I ask this question in my heart, I know the answer clearly, but I still ask it in my heart, because I love my brother, my family, and I love you more than myself.

You study hard and work hard in it. We care about you and miss you. You shouldn't feel lonely. Come on, do well and get out as soon as possible, my good brother.