Does a high amount of semen at ejaculation mean a high sperm count?

Just curious...I read online that the average amount of semen ejaculation is 2-5 mL. A teaspoon is just a touch under 5 mL. If we’ve had sex frequently, my husband ejaculates at least a teaspoon of fluid. If it’s been a while, he has much more. Is this a good sign for high sperm count, or are the two not related? We haven’t even started trying yet (planning to in Sept), but I just want to have peace of mind that we’re both fertile.