What should I do to prevent faster ejaculation?

Everything and everyone in you life right now is creating a great deal of stress for you. You will most likely not be able to perform sexually until you are able to deal effectively with your relatives and your daily stresses. My suggestion would be for you and your new wife to go away for a few days all by yourself where you can really get to know each other and just enjoy being together. When you aren't concerned about your family or your work and all of your attention can be devoted to your wife I believe you will be able to fully enjoy being with her and be able to really be a husband to her. Don't worry about being a little awkward the first few times with your new wife. Being nervous is natural, but after a little while you will develop a rhythm with her that will be enjoyable for both of you. Go to her. Go away by yourself and enjoy your new wife.