how do you take steps back

I've been talking to this great guy for about 3 months now. I like him so much, but I think I might be starting to like him a little too much. I know he likes me back, but we're tying to take things slow and I've never had this problem before. How do I take a few steps back and guard my heart? I really don't want to get hurt or come off as overbearing or too much too soon. Any advice would be amazing. Thank you.