I can add another note on the cannabis, as far as laws go ... if you've got a federal job, especially one with a security clearance, and you happen to want to keep it ... it's a no-go. Whatever the state laws may say, federal law trumps in those cases, alas. On the other hand, it's his health and his choice ... but it IS something to be aware of. (I know some folks having to make these sorts of decisions, and it's not easy.)

Surgery 5/31/13
Tongue lesion, right side
SCC, HPV+, poorly differentiated
T1N0 based on biopsy and scan
Selective neck dissection 8/27/13, clear nodes
12/2/13 follow-up with concerns
12/3/13 biopsy, surgery, cancer returned
1/8/14 Port installed
PEG installed
Chemo and rads
2/14/14 halfway through carboplatin/taxotere and rads
March '14, Tx done, port out w/ complications, PEG out in June
2017: probable trigeminal neuralgia
Fall 2017: HBOT
Jan 18: oral surgery