@Sim2335,
You can have crushes into your 90s and beyond. Many of us have hundreds of crushes over the courses of our lives. There's nothing wrong with that.
Crushes are not love.
They are wishes.
Love (the real thing, not the stuff of the movies) is not going to happen without knowing someone.
This means opening your mouth and speaking to them.
Personally, I think your psychologist is suffering from a lack of imagination. If a plan of what to talk about will help you, then by all means, make a plan!
But it doesn't have to be set in concrete. Keep it fluid.
So, your plan would look something like listening to (or reading) the news and picking out some interesting, noncontroversial stories. These can be things like what the James Webb Telescope has recently photographed, or something local where people or animals are helped or the area is improved or beautified. Maybe the roads are getting fixed, or there are more jobs, or ground was broken on a new museum in your area, or the animal shelter has emptied out because so many people want pets.
Google
human interest stories near me, or
good news stories near me if you are having trouble finding them.
These are
not for you to memorize or to quiz her. They are the basis of a few springboards for conversation.
"Isn't it great that the bridge is getting fixed? I always feel like I'm taking my life in my hands when I drive over it, know what I mean?" "I saw there's a new show coming to the local art gallery. Who knew our town could attract an artist as big as ____?" "Did you hear that ___ is coming to play the local arena? I was thinking of getting tickets. Do you think they're sold out yet?"
Stuff like that^. Light, easily digestible, and, perhaps most importantly, they all end with easy questions.
Come closer, and I will teach you a conversational secret -
Ask questions. Listen to the entire answers. Formulate your response (if any) based on the entire answer and not just the first few words or what you think the statement is going to be or what the answer should be.
Lots of people don't do this ^. It's a great way to stand out, even as an introvert. End your statements with easy questions, preferably the kind that aren't quickie yes/no questions.
And be observant! Let's say you're talking to your crush at a party. "Oh, I see you're just about out of your drink. Can I get you a refill? What are you drinking tonight?" or "I love that you did your hair differently this evening. Did it take a long time to do?"
You're not being intrusive. You're being nice. And, by the way, for actual compliments (like her hair), make it not about looks but about something she has done or bought. That is, something which required an effort, rather than what comes naturally or by dint of birth.
Complimenting someone's shoes, hairstyle, or manicure is a lot safer than complimenting their eyes unless you know that person well. Intimate compliments like that can feel unnerving when they come from a relative stranger.
And recognize that women are understandably vigilant about such things. Anything that feels weird, off, or moving too quickly will send up red flags. So tread lightly.
You're going to be fine.