How do you know when a boy is ready to potty train?

My son will be turning 2 next month and I think he may be showing signs that he is ready to be potty trained. He would constantly take off his diaper and I can tell when a poopy diaper is bothering him. He would also stick his hand into the back of his diaper where his butt is and I’m assuming it’s because the poop is bothering him? I do change his diaper right away and wash him instead of using wipes. I tried sitting him onto the portable potty that I used for his older sister when I was potty training her but he seems to not understand and plays around lol. Should I continue to keep trying or is he not showing enough signs yet? When I potty trained my daughter, she was between 2-3 years old and by that time she kind of understand the concept and things I was asking her so this is just different with my son.