How to know if baby is still hungry or full?

My daughter just turned one and she just eats and eats lol. She never acts full. I fed her dinner tonight and she didn’t act full so I kept feeding her. Then during bath I noticed her stomach was rock hard and REALLY full.

Should I just keep letting her eat if she’ll eat? Or is there a stopping point? Lol. First time mom and new with this since she just turned one.

Thanks!