Final answer:
The nurse can advise the couple to schedule dedicated time for intimacy, prioritize rest and stress management, and possibly seek couples counseling, as well as discuss good contraceptive practices.
Step-by-step explanation:
When addressing the concerns of a 35-year-old woman and her husband who are experiencing fatigue and a decline in their sexual relationship, the advice that a nurse can provide includes several strategies. Firstly, the couple may schedule dedicated time for intimacy to ensure they are prioritizing their relationship despite busy work schedules. Secondly, prioritizing rest and stress management can help in reducing overall fatigue and improving the quality of their interactions, including sexual relations. While seeking couples counseling could offer professional guidance and strategies tailored to their specific situation, it's important to note that the use of good communication about contraceptive practices could reduce anxieties around unwanted pregnancies and contribute to a more relaxed sexual experience. However, it's important for the nurse to tailor advice based on the individual couple's circumstances and needs.