Less sex or more?

Theodora • TTC # 1 IVF 🙏 Unexplained infertility/endometriosis

Is it true that when trying to get pregnant the man should not ejaculate too often or the Quality and quantity of the sperm go down? I was once told that you should try holding off and then when it’s your time to ovulate to have sex then and it’s more like me is this true or was that false facts?