pics: https://imgur.com/a/836WYRa

Not asking for advice on my skin as I already have a routine that's working fairly well. More so a scar problem. I got this scar when I was 5(kindergarten) I'm now in my first year of college(18). What would be the quickest/most effective method in decreasing the appearance of my scar? I already have Mederma Advanced Scar Gel: Use less, save more https://www.amazon.com/dp/B001PQBEAI/ref=cm_sw_r_cp_api_i_8qs2BbNC62VY9 But being a worry about nothing type of kid I didn't stick to using it daily. I have about a little over a half tube left which I estimate will last about 3 months. Should I stick with mederma or is there some sort of other scar treatment that'll work better for my circumstances(having a 13 year old scar). Thanks.