Absolutely not.
I think it is simply too large a sacrifice.
Respect his choice to say no and end things.
Don't dawdle, even if you love him.
A decade from now if your chance has past, you will likely bitterly regret your decision.
I have known quiet resignation for years become a relentless sadness.
Someone a bit older than me was in arelationship where he kept her hoping for 5/6 years, until he finally admitted he wasn't prepared to have children and liked their life as it was, unmarried and free to travel on great holidays etc.
He had strung her along IMO.
They both had great careers.
She wasn't so much pushed about marriage, when children weren't going to be an option, and he never asked her anyway.
She went back and forth about it, with her sister, but eventually decided she had left it too late as she was 40 when he eventually gave a final no.
She definitely was sad about it quietly over the years.
When she was 48 an opportunity to work in another of office in the US came for 12 months and she just accepted, out of the blue.
He had had some health news that was going to really reduce his mobility and she realised that she didn't love him enough.
I think their not having children together, HIS choice, not being married, convinced her that she had given up enough, and she was done.
She returned back for a weeks holiday, 6 weeks later, ended her relationship very abruptly, and put everything from the house that was hers, into storage.
Her family had been very surprised with the work move, but were stunned that she ended the relationship.
She had met a widower over there, and though they took it slowly, she has been with him ever since.
She never had children but she has grandchildren through him that she adores, just like she grew to really love his children.
I think if you really want children, you don't place the choice in the hands of someone who doesn't.
The regret can be too huge.