Valerie,
regarding your question about the cisplatin dose. This was 212mg. I ASSUME from what you write that this is the total dose. Since he is getting 3 treatments I assume that this is applied every 3-4 weeks.

For a 3 dose regimen 90-100 mg/m2 is dosage that is commonly used. Depending on the weight and height you get the Body Surface Area in m2. Again assuming this to be around 2-2.1 the number you state 212mg seems to be reasonable, especially when taking into account that he probably lost weight from when the initial calculation was made.

For example my BSA is 1.99m2 (170lb, 6ft) so with a dose of 30mg/m2 the total amount was 60mg. If you get this weekly they give you 1/3rd of the dose.
FYI, I am not an oncologist.

Hang in there it will get better.

Markus