Been trying to conceive third child for four months. have positive ovulation tests. how to speed up the process to reduce age gaps?

Ov kit: Definitely using an ovulation kit to help predict best window to . If that doesn't work you could consult with your ob about intrauterine insemination and possibly clomid (clomiphene) at later date

You get what you get: The cited average to a desired pregnancy is 6 mo with a range of weeks to a year. Some conceptions actually occur but never have time to attach before they are shed. Some attach but never form a viable pregnancy. You can time exposure around expected ovulation to increase odds but nature will decide when it goes right.