How to get him to TELL ME to go to the potty

I started my 3 year old using the potty. It's been maybe 3 weeks and he would tell me before sometimes when he had to pee. I think it's gotten to the point where I just routinely put him on the potty at certain times and he goes just fine... I do this to avoid accidents and cleaning up!! How do I get him to TELL ME everytime when he has to go? Should I stop making him go to the potty routinely? Should I wait for him to tell me and keep cleaning accidents?? (He's still trying to master poop but that will take a while...) I'm a broken record ALL DAY... telling him to tell me when he has to pee or poop in the potty.