How to delay labor naturally?

Lejla • 28 yo mom of one, preggers with no. 2 due June 22
So I have done a lot of research about gestational age and how it can affect the baby and it turns out that babies born at around 41 weeks are far more likely to have better cognitive abilities, better reading and arithmetics skills, a higher IQ and are generally more developed, especially later in life. My question is does anyone of you know some things that will help delay labor naturally? I am 34 weeks currently, no BH contractions, no signs of labor, but I would like my baby to keep cooking till 41 plus weeks. Thanks in advance.