How many ultrasounds do you get?

Earlier on in my pregnancy after NIPT testing they looked at him a few times but he was so small. I had my 20 week scan where they gave me his weight for the first time. And I haven’t had one since, I’ll be 27 weeks Sunday and at my last appointment they told me my next ultra sound is at 36 weeks. That’s about 16 weeks since the last, and just about the end of my pregnancy. I thought now that I’m further along they’d look at him more and make sure everything is everything and give me updated weight and all. How many do you get? Or have had? Is this normal?