If you find that the cat's cervix is not open, you can try the following methods:
1. You can judge whether the cervix is really closed by touching or observing the delivery process of the cat.
2. If the cervix does not open, you can try to gently massage the cervix to promote the opening of the cervix.
3. If the massage is ineffective, or you are not sure how to deal with it, it is recommended to contact the veterinarian for consultation and treatment immediately.