depends how you look at it
Bloods going down really means his white count [ those cells that fight infection ] are decreasing as they have been 'killed off ' by the Chemotherapy. This then means he has no resistance to infection.
That so-to-speak is the bad bit
The good bit is that this is what we want
as the white cells are the ones mainly affected in leukaemia . The theory is that you eliminate them and then allow the body to start making them again and watch and see what happens - in some cases you get remission [ recovery with no leukaemic cells in the white cells ]after one round of chemotherapy . In others you don't and you have to keep persevering.
In Raymond's case some of his red cells are also affected . with apologies for going so wildly off the prayer aspect of this forum