There have been some amazing break throughs in technology. My wife ended up having CAR-T treatment with her T-cells sent to the US for genetic modification, not sure if that makes her part American....
Stay strong...
My wife had chemo every 3 weeks, for the first week of the 3 week cycle she was on steroids so was 'lower' at start of week 2 rather than straight after the chemo.
Keep positive even when things seem to be going badly. Difficult I know but my wife had a problem which was then diagnosed as lymphoma , supposedly a cancer which is an easy one to deal with(relatively) but nothing was working for her then CAR-T was approved for use in UK and it worked.
From my personal experience I think its important to stay as positive as you can be, it kept me strong and then I could provide her with support.
Keep re-enforcing the good things.
5 years on she is good and in remission having twice gone very close to the wire.