It depends on you op.
I had DS at 45y2m. He arrived a healthy 8lb. He is now a strapping 6' teen.
However, I didn"'t drink, had never smoked and was fairly fit . We also have a family history of late babies. My dm had me at 43 and dsis at 45.
I had an easy pregnancy, no issues, worked until 35 weeks, slightly slow labour.
When DS was three, I took the conscious decision to improve my fitness because I didn't want to be an 'old' mum. My own mum had never joined in with any of the school activities. I took up running at 48.
I became a single mum when DS was 3. Since then I've taught him to swim, to cycle, to ski, to shoot. We cycled together all through covid and still ski together even though I'm in my 60s. I still run 5k two or three times a week.
I think if you are prepared to put in the work, look after yourself, and have the resources for another child, then yanbu.