Help on ways to boost fertility and tips for tracking

So looking for some advice. I have one daughter she is 15 months old and took over 8 years to conceive. We weren't preventing but i wasn't tracking. So this time we are plannig and actually trying to conceive this one but didn't know what kinda things i can do to help boost fertility for both me and my fiance? Tips on tracking ovulation and bbt. And anything else you have found helpful. Thank you ladies!! Hoping for a 2020 baby!!