I can’t fault your husband for not wanting to face chemo again. It’s a powerful medication and not without side effects. But it’s a means to get the cancer under control. It looks as though he was given 3 options for followup treatment: #1- 2 doses of the heavy chemo (referred to as Conditioning) followed by transplant,
#2- 5 doses of gentle chemo followed by 14 days of pills and repeat every 4-6 wks
#3 pills indefinitely.
It’s positive to hear your husband is growing stronger after what he went through. That’s expected as his blood numbers climb back to normal levels and his cancerous cell load has diminished. But he’ll need to start treatment soon. I’ll be honest and tell you that with every round of chemo he has, there will side effects which will plummet those numbers again and have a person feeling mighty low until the blood cells regenerate again.
The advantage with the transplant is once that’s done, there’s no more chemo. It is, however, a very arduous journey physically and if he isn’t mentally prepared it can be difficult.

I wonder if it’s possible that your husband takes option 3 with the pills indefinitely. You could ask his hematologist oncologist if your husband could try meds for a few months to see if they keep him in remission. If they don’t, would it then be possible to consider the transplant or option 2 with ‘light’ chemo and med cycle.

This is a huge decision for both of you and I know you want your partner around for many more years to come. And he can do that! From what you’ve said previously, this guy was in great physical shape and took good care of himself. That is an advantage for him to get through this journey. If you can encourage him to start walking and working out a little bit each day, that will also help bolster his confidence. He doesn’t have to be confined by his disease!

If it’s not too personal, what’s your husband’s age? What does he enjoy doing?