I'd say that you should start off by relaxing about it. If you get worked up and stressed you might tend to take longer. Just let it happen naturally. Obviously try DTD more often around the time that you would ovulate. Some woman know when this is as they can feel it but others go by the lengh of your cycle. If I am correct, you ovulate approx. 14 days after the start of your last mentrual cycle. So DTD up to 4 days before and after is good. Not every day but every second or third day will work too. And get your body ready for pg too. Take folic acid and make sure your diet is good etc. This goes for DP too. Up his intake of folic acid and limit alcohol etc. Good luck and I hope you get your BFP soon!