Removing thc from the distillate via chromatography is a option, still pricy but there was talk in another thread about this and a unit that was only 65k:
Another route would be isolating the CBD and then remediating the mother liquor and adding the isolate back in to make full spectrum distillate. There’s been some talk about creating isomers like delta 10/cbn recently that could possibly work to achieve this.
I’m pretty new to all this myself and just getting started with my first isolation of CBD with goals of remediating the mother liquor but that’s still a ways to for me so I’m probably not qualified to give that much advice.
That being said with the budget you have mentioned I would highly recommended talking with a consultant about your options.