If you take the time, I suggest organic fertilizer and never bagging the
clippings.

Yes, I tend not to bag grass clippings unless they are too fast.

It will take a few years, but after about seven years, I can see
the difference.

Seven years sounds to be quite long. Luckily I have a lot of patience.

In your case I might also suggest scattering a little top soil several
times a years to help it out.

Good. This is something I can do now (instead of waiting for this
fall). This should keep me busy for a while.

Thanks for the info.

Jay Chan