Hi and sorry to hear the news about your son.
I seem to be first to respond to your post so need to say that this forum is prodominently UK based members. Hence we have different challenges with regard to healthcare and are generally provided by the NHS and where necessary by funding and support from the Leukaemia and Cancer Research charities.
I will say at early juncture that it's really important that he is covered and can access the best services possible. Both in terms of Consultants and also with regards to being able to get the costly medication that will be required.
Because I'm English with only a little knowledge of the US system and not in either of the states you mentioned then I don't really know what is classed as "high support". I can't help thinking though that it's going to be really important for now and the future that you get whatever isn't going to restrict his opportunity to get the best available medication and treatment. So I'm thinking "high" is likely to be the appropriate one.
I note you said he "appears" to have CML. Do you mean there's some doubt? That diagnosis isn't yet confirmed? If so then that's where he needs to start and with a good Haematology consultant.
You also said "Is this something he can do on his own?". Again I'm not sure I understand what you mean by this? But he will need hospital services that are able to undertake regular monitoring of his blood and in particular such as genetic testing for the Philadelphia chromosome and/or the BCR-ABL1 gene. IF CML is confirmed and he's a good candidate for TKI therapy such as the drug you mentioned then he will need regular monitoring and check ups throughout his life.
This site has some fabulous resources available and I'd suggest you familiarise yourself with the stuff under CML Facts. In there are such as FAQ's and then under "LIVING", there's a "Just Diagnosed" and again this has some good information and including a template of questions which you and your son will be well advised to ask.
In the meantime all the best
