Crush on my Co worker

So I am 25M and my crush is 22F. We work at a Fittness studio me at front desk her as an instructor She moved to the state late last year so is basically new in town when we work together there is a very limited amount of time that we could interact is very limited. I did manage to ask for her number and I have attempted to have conversations via text and she always replies nicely but the conversation never go for very long. She is trying to build a business as a Health coach when she isn't teaching at my job so it's fair to say that she is a very busy person I've told my friends at work (both women) about my crush and all 3 of us get the vibe that my crush has dating very low on her priorities list if it's even there at all. She is always very nice and polite when she comes into work and when she leaves but she has never initiated via text outside of work and we have never hung out outside of work I honestly have no idea what she thinks of me. I would not describe us as friends even. My friends have advised that taking a step back and not putting so much of my time and energy into her and just let whatever happens happen. A note about me I had my first real heartbreak 3 years ago and this new crush is the 1st time I've felt like this about someone since. I am making this post looking for any and all advice on what I should do Right now my "Plan" is to just focus on myself and maintain a neutral position with her at work since I haven't actually confessed yet so she has no idea how I feel about her and just try to engage naturally with her at work when I can.