"How do I take it to the next step/see if he's ready to get there?"

First of all, don't worry too much about the age difference. If it's meant to be, age doesn't matter. Also people get married to people of all different ages so 2 years is nothing.

But if he admitted that he likes you then tell him how you feel too. That should trigger some sort of progress. Just admitting that you two like each other is a huge step.

If you are wondering how to take it from there, then keep talking to him and reassuring to him how you feel. Don't rush things though.

Just get to know him better, hang out, see how you two progress from there and things should fall into place.

I know it's hard to just sit back and wait, but sometimes you need to let things happen on their own if they are going to actually work out. Unlike forcing a relationship too quickly, which could lead to ending the relationship just as quick.

Good luck!