Doc said to have sex every other day during ovulation ..:

Has anyone else been told this? Brief back round - I had my first baby at 40 last November. A beautiful little girl who is now 6 months old and perfectly healthy. I want so much to give her at least one sibling, and so we are trying for baby #2. It didn't take last month, so when I went to my GYN fir a routine exam I asked for advice and he told me to have sex every other day (not every day) during the week I ovulate to ensure the sperm is stronger. Has anyone else heard of this??? - Lori