Thirty-four is not the problem, but the poor foundation of mathematics and English is the big problem. Most of the initial exams for postgraduate entrance examination are not enough results in the unified examination subjects. If political problems are solved well, sign up for a reliable remedial class, listen carefully and practice seriously. But if it is math or English, it will be very troublesome. Now it is not a question of how to connect, but the original foundation is not good enough. In that case, you can analyze it yourself: you didn't study well in school before, but now you have a family. What are the chances that I can compete with young people by studying in my spare time?

Of course, where there is a will, there is a way. If you are really motivated, you can try. It's not completely hopeless. If possible, reduce the difficulty: take a non-science major, get rid of the burden of mathematics, and then concentrate on English. If the foundation of English grammar is acceptable, there is still hope to learn enough by memorizing words and doing real questions. However, there is another problem here: you can't pass every subject, so you can't pass the exam. Think about which subjects you will get excellent grades in. Only you know that. It is not easy to take the postgraduate entrance examination in your thirties. Wish you success!