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When adjusted for duration of breastfeeding, researchers found that one full-term pregnancy lowered the risk of early menopause by 8 percent, two pregnancies by 16 percent, and a third pregnancy by 22 percent. Breastfeeding for a combined total of 25 months lowered the risk by 27 percent (when compared to women who breastfed less than a month).
https://www.healthline.com/health/menopause/how-to-delay-menopause#delaying
"Pregnancy and late-onset menopause
While it’s rare, women are still able to conceive and give birth in their early 50s. This can delay menopause because a woman’s body adjusts to the hormonal changes that pregnancy brings."
"Effects of late-onset menopause
Unlike early and premature menopause, late-onset menopause can actually have some major health benefits."
https://www.healthline.com/health/menopause/late-onset#Pregnancy-and-late-onset-menopause