Is an academic comeback possible??

Ever since my childhood, I have experienced academic challenges throughout my education.

I am currently 16 years old and have relocated multiple times during my childhood, residing in three different counties. This may have impacted my academic progress.

I trudged through middle school, achieving average grades despite challenges with studying.

I am now in 10th grade; both my academic performance and knowledge base have severely degraded, and I feel very lost and afraid for my future.

I have an iq of 115, yet i feel stupid and ashamed of myself, due to the mere fact i struggle with procrastinating and learning issues.

I must add, lately I have been trying to better myself by seeing a therapist, going to the gym, having an adequate sleeping schedule, and following a healthy diet; however, despite these efforts, my learning difficulties persist. Is this a inherent limitation, or can I somehow fix this? I feel very unmotivated because I cannot help myself to study.

Math, chemistry, and physics are the subjects that cause me the most trouble. I am behind in my math foundation, which has made me very anxious to even attempt to learn. I need advice.