To assess a time lord's strength, you look to its condition in the solar return chart as compared to its condition in your natal chart. While being retrograde is a type of debility, this is still a strong Saturn because it's in domicile. Other ways Saturn could be strong in your solar return chart are if it's angular, if it sees your natal Saturn - in a by sign, but not necessarily by degree, Ptolemaic aspect (trine, square, opposition, sextile, or cohabitation in the same sign).
Seeing Venus and/or Jupiter (natal, solar return, or both), the same way, also strengthens it. An aspect to natal and/or solar return Mars, meanwhile, would indicate Mars kinds of problems being up for you this year.
And this is all compared to your natal Saturn. Unless your natal Saturn is in Aquarius or Capricorn, your solar return Saturn is probably stronger, because it's in domicile. That gives it more power to help you, as your time lord. Saturn sorts of things will probably go better than usual for you this year.
All the retrograde might mean is that those things have a more personal, internal meaning for you than an external one, or that they take longer to manifest in a positive way. If your natal Saturn is also retrograde, that would be no change from the usual. If it's not, then you might see a more inward turn and/or more delay than usual. But then, Saturn delays anyway, and calls for inwardness anyway, so it might just be a more Saturnian Saturn.