Is it that bad

I(19 ) recently got my eyes checked and my prescription is -2.75 is both eyes , I am wearing glasses since 6th standard . I don't remove my glasses at all ( except - shower and sleeping ) , I wear it like it's my body part , early in morning i look for my glasses . Honestly when I visited my doctor two days ago doing that letter reading on screen , he commented " your eye sight is too poor and weak for your age " , sadly it does bother me and my doubts are my religious habit of wearing glasses 24×7 , I don't go in sunlight much also not a big healthy food eater , I am guessing this is all lead me to this .. can anybody share their experiences of reversing myopia or tips to help me lower my prescription . Please a clear big long explanation needed xoz I am total noob in this thing