If you have been using them for 1 year, then I would say give it one more year. You never know you may start seeing benefits soon. If you quit now, you would lose the effort for doing this for a year, and then "if" part where you might think it would have worked in 18-24 months if you continued the effort.
Also, can you clarify to us that what signs you saw 15 years ago and that this is all you have receded in 15 years and without any treatments? If thats the case, you are lucky that you have really slow progression. Regardless, you still look fine with the recession