First of all, of course, we should treat our children as our own. Only if you think so, can you treat him wholeheartedly, but it is really not easy to do this. After all, that's not your own child. You two are separated by a layer of blood relationship, and you are still stepmother, so the relationship may be really bad, but you should think about the bright spot of the child, think about his lovely place, and really treat him as your own child.
Caring for children is no different from two aspects, one is material care and the other is spiritual care. As a stepmother, we must do these two kinds of care. First of all, you must give your child everything you buy and get everything he needs. Anyway, treat him as your own child, so that your husband will be particularly satisfied with you.
Secondly, spiritual care is to talk to children often. He may not be able to accept his stepmother in a short time, so you should have a good talk with him, let him really accept you from the heart, and let him tell you anything unhappy. You often talk to him to find out his real thoughts and needs. I believe that as long as you devote your energy, really love him and care about him, your children will definitely accept you, and so will you.