Train with the same weight you were using, but reduce volume.
Breaking down muscle at this point is useless as you will lack the ability to mend it, and the ability to grow.
The main focus is retaining as much of the muscle size and neuro muscular connection.
Since no matter whether on aas or not, your body grows in cycles, and training always occurs in cycles.
All you do is match your 'peak training' to your AAS cycle to maximize growth, and when you go off, that is your maintainance or 'resolution' stage.
Rest up, recover both mentally and physically, recharge and prepare yourself for the next training cycle.
Almost everything in life is cyclical and so too is bodybuilding.
I will add that it is good to loose a little, as recovering muscle memory at the begining of your next training phase provides training 'momentum' to catapult yourself past your previous best form.