Hello there @Help, welcome to the forum at this difficult time. It’s really so loving of you to join to help your dad, and please know you’re not alone in supporting a loved one diagnosed with a blood disorder. The forum is here to support you both.
I see you’ve been greeted by dear @DuncanB and @Nichola75 and would agree with Duncan that being fit and healthy is positive for your dad (and us all). Perhaps you’d like to read the great information about Acute myeloid leukaemia ('AML') researched by Blood Cancer UK: Acute myeloid leukaemia (AML) - what it is, symptoms, tests, treatment, prognosis and support. | Blood Cancer UK
I wonder, do you have loved ones you can speak with about how you’re feeling, aside from your dad? It can really help to have trusted confidants to talk about all this with, and personally I find therapy also really helpful for processing and living with my diagnosis of Polycythaemia vera ('PV').
Counselling can be sought via GPs (although, just to warn you, waits are long) and privately via organisations like BACP, UKCP and Mind. Cancer organisations like Macmillan Cancer Support have some great free advice about counselling, while Maggie’s might even have a centre near you to pop into.
For what it’s worth, I take a daily type of chemotherapy (hydroxyurea) to keep my blood cancer under some sort of control. I didn’t know chemotherapy could come in capsule form before diagnosis, isn’t it sci-fi?! Sounds like your dad is already under the care of haematologists who have a care plan for him, which I’d say is ideal.
If you’d like to talk through any of the medical side of things, how you and your dad are doing, or other queries, then do consider giving the Blood Cancer UK nurses a call on the number Nichola shared above, they really know their stuff and can point you towards other resources.
Hope that helps a little @Help, do have a look around the forum to see how others affected by Acute myeloid leukaemia ('AML') get on.