Women have never gone wrong by overestimating how important sex is to their husbands. And by sex, I don't just mean the physical act of sex; I mean the psychological components of sex as well. While men love physical sex, they also desire a level of sexual energy in their relationships that is very often missing. While this is useful information for any woman, it is critical for those with submissive husbands. A submissive husband craves sexual energy (which you can feel free to read as sexual "attention") from his wife as much as or more than he craves physical sex. He can go without the physical sex for extended periods of time, but he needs the sexual energy to feel satisfied.
How exactly does the wife go about adding sexual energy to the relationship? For starters, she can be sexually playful throughout the day. She can be affectionate with the intent of arousing him by kissing on his neck, nibbling on his ears, and patting him on the bottom as the couple goes about their daily routine. It is particularly useful if as she does these things she is telling him what she expects from him. For example, instead of asking him to take out the trash, sneak up behind him, kiss on his ear and tell him to take out the trash in a soft, sexy whisper. He will absolutely love this!
Remember that this does not have to result in any more physical sex than the woman desires. However, the woman needs to be recognize that her husband's desire to have physical sex will be higher than ever. She should not make the mistake of ignoring this reality; she should overtly acknowledge it. As was said before but bears repeating, most submissive men are very happy to be denied release (within reason) if their wives make it clear that they are consciously exerting their control over their husbands. Wives can simply tell him that they like having him remain aroused as he's easier to control. They can tell him he hasn't yet earned sex yet. They can tell him whatever they want as long as they do not ignore his heightened arousal. Importantly, women should not let their own physical needs go unanswered. Just because the husband is denied physical release does not mean that the woman needs to be denied. The wife should receive all the sexual stimulation (e.g. oral sex) she likes with no expectation that the act will be reciprocated.
Most women would not want to forego intercourse altogether as it is an important and enjoyable component of their sex life. However, when women do have intercourse with their husbands, they should not necessarily concede to him his orgasm. They can have him pull out whenever they feel like it. Consider the benefits to you of keeping him on edge. It is no great secret that after sex men become very sleepy and disinterested in affection and communication. Men have a physiological response to orgasm that is in conflict with a woman's emotional requirements for cuddling and talking after sex. I promise that any man that is denied an orgasm will have no desire whatsoever to get quickly off to sleep after being intimate with his wife. In fact, he will probably open up and talk as never before. He will dote on his wife, playing with her hair, rubbing her back, and kissing her neck and shoulders. He will behave as if he is just getting to know her. It will be as if the old flames have been rekindled.