How to clear dreamwalker boss solo (DPS)

Hey guys! I was just trying to use godmode on my private TC server and solo ICC (10/25 man). I have created a dps DK and reached the Dreamwalker boss but since that boss requires healer, I am stuck at that stage. Can i get some suggestions on how to clear this boss solo (without bots) or perhaps skip the encounter and reach the next boss? I have tried force heal the boss by using .cast [#spell ID] but it only heals a small amount of the HP, I tried to change the effect of the healing spell using .modify spell` and it returned ‘TODO’ in the console.