Is there anything i can do to replace sperm faster?

No: A healthy male testicle makes seven million sperm per gram of testicular tissue daily. It can take a couple of days to build up enough semen to have a large ejaculate. That's why most fertility experts recommend at least 2 days of abstinence prior to producing a semen test for analysis. Drinking plenty of water, eating a healthy diet all help improve sperm quality.