My hair is naturally thin and sparse. I am considering hair loss treatment; should I visit a clinic before my summer vacation?

My hair is naturally thin and sparse, so lately I’ve been wondering if I should get hair loss treatment. My forehead is on the wider side, so I’m becoming increasingly self-conscious about my hairline; I’m curious to know how much a treatment could help improve it. I’m debating whether it would be better to get a consultation before I start losing a lot of hair, or if it’s okay to start now that I’m already experiencing some thinning. Since it’s summer and hot, I can’t exercise, and because it’s vacation season, I don’t have enough time to take care of my hair, so I keep hesitating whether it would be better to take time off work to visit the clinic. If anyone else has naturally thin hair like me and is considering hair loss treatment, I would be very grateful if you could share your experiences or advice.