Is the autumn sunlight okay for blemish removal right now?

My blemishes worsened throughout the summer due to UV rays, so I consulted a dermatologist. The doctor advised that autumn or winter would be the best time for the procedure. However, now that the treatment is actually approaching, I am honestly worried about whether it will be okay, as the autumn sun is also quite strong. I diligently apply sunscreen and use a parasol, but the constant appearance of blemishes on my face is really building up.

I have had laser treatment in the fall before. While aftercare was definitely easier than in the summer, I was still worried about sun exposure, so I took extra care whenever I went out. Although autumn is considered the optimal season for removing blemishes, I was left with the anxiety that the pigmentation might actually darken, especially since my skin tends to be sensitive. Therefore, I am debating whether it is right to start the treatment now or wait until winter when the sunlight becomes weaker.