Advice please! Husband has progression!

I need some advice.  It’s been a while since I’ve posted.  Just to recap since it’s been a while, dh at 49 was diagnosed in Sept. 2017 with large tumor in sigmoid.  Colon resection was done in Oct. 2017.  Soon after surgery, found out he was really stage 4, and he had tumors in his liver and possibly lungs.  Liver was biopsied and positive for mets.  He then went through 6 wounds of FOLFOX with Avastin, a break and then liver resection and ablation.  Then 6 more rounds of chemo.  He had to have dosage reduced and didn’t have ox the last two.  He finished this chemo in July 2018, and his CEA started going up.  This has always been an accurate marker for him.  It went up from 2, to 11, then 55.  Scans were done and new spots in his lungs spread throughout and the ones previously there had doubled in size.   He was not a candidate for surgery so he went back on chemo in January this year.  This time Folfiri with Avastin.  He could not tolerate this chemo.  It made him deathly sick and nothing ever shrunk on it, it grew.  So he stopped chemo completely in May this year and decided he wanted no more treatment.  Fast forward to now and his CEA has gone way up and over the last couple months has doubled everytime and he is now at 188.  More scans were done and he has 5 tumors in his liver again in addition to yet another new one in lungs.

 So now for the advice I need and what’s going on now.  They offered him y90 for his liver, they will do nothing for his lungs because he isn’t surgical and he wants no more chemo ever.  So his lungs or anything in his system would not be treated and his CEA continues to climb.  The liver tumors right now are all in right lobe so they would treat the entire lobe.  He doesn’t want to do the y90, because at this point they are telling him that it “may” only extend his life at this point by a few months if it works and the cancer doesn’t pop up elsewhere or his lungs get worse.  I don’t know what to do.  He keeps asking me if he’s made the right decision and what do I want him to do.  I don’t know what the right answer is.  I will never think that he is giving up ever.  To me cancer patients are not giving up ever, they fight everyday regardless of treatment choices.  But I can’t help but think he’s making a mistake and he might be giving up months of his life.  But there is no guarantee that the y90 will work and we can’t prevent or slow growth of tumors anywhere else cause chemo didn’t work for him and made him so sick.  So what do I say?  I don’t know what the answer is.  It’s like he’s looking for me to tell him what to do and I can’t do that . I just keep telling him that if he doesn’t want to do treatment, don’t do treatment.  And if he changes his mind I will support that too.  The good thing is right now, he actually feels ok considering.  Or I guess I should say he feels better off treatment.  He gets tired easy and does cough some and has neuropathy and sometimes he gets confused.  The doctor is telling us that if he does nothing he probably only has 6 months.