Trice rest and lots of protein in diet, my Oncy was very keen on egg whites though how exactly you eat just an egg white 
also they can give you neutrophil boosting injections although that is to see you over the lows when you are so low that you are at risk of an infection. After that my WBC would drop again and every treatment I had a long slow climb back to the point where they felt it was safe to give me the next treatment but they were all delayed. I Still have a low blood count, in the 2.?s versus 4 as the normal minimum and don't seem to be any more vulnerable to infection than normal. My pre diagnosis bloods showed a low blood count too, which may have been stress or I may just have been that way naturally. I think KK was told something similar.
I am sending lots of good vibes to all those suffering from sickness and gigs don't forget you are having to do lots after major ops laid you up in bed, two young children and your faithful pump, and rads, it would be amazing if your body wasn't worn out, and out of kilter. Give it time and panic only if it doesn't get better with rest and recuperation, and perhaps some physio.
It's all a bit moody city here, too much sleep deprivation all round, so I am sorry if haven't the energy to scroll and remember to send hugs to everyone who needs them but the intention is there.