Which statement by a client indicates a misunderstanding of insulin needs during pregnancy?

The statement indicating a misunderstanding of insulin needs during pregnancy is that the client plans to increase their insulin dosage by 5 units each month during the first trimester. During early pregnancy, particularly in the first trimester, insulin requirements generally decrease due to increased sensitivity to insulin caused by hormonal changes. Therefore, rather than increasing the dosage, many individuals may need to decrease it or maintain a stable level to avoid hypoglycemia.

As the pregnancy progresses into the second and third trimesters, insulin requirements typically increase as the body becomes less sensitive to insulin due to the rising levels of placental hormones, which is accurately captured in the correct option. Additionally, breastfeeding's effect on insulin needs varies, as it may indeed lower insulin requirements or help with glycemic control after pregnancy, but this would not apply during the first trimester.