Perineal Massage

Hi mga moms! Currently on my 34th week, hingi sana ako feedback at advise re perineal massage. Naging effective ba sa mga gumawa para maprevent ang tearing or malalang tear during delivery? Ano pong tips nyo and how frequent nyo po ginawa during 34th - 36th week? Aiming for VBAC and gentle birth po kasi ako and ang worry/fear ko na lang so far ay yung pain at management ng punit after manganak. Thanks!