Hi glovepuppet, welcome to YD. It may be difficult, but you will need to find a doctor who not only has hyperbaric specialisms, but has an in depth knowledge of your illness, treatment, prognosis and so-on.
i come across many people who are at the latter end of treatment, and trying to get back to work, and somethign which is obvious to me is that there is a temptation to do things before they are quite ready, I suspect it is a natural reaction to being unable to do the things you love - and as soon as there is a little bit of light at the end of the tunnel, they try and make a dash for it. As vonny says, everyone is different, and you are likely to be tired, which may not be good for diving. I have heard in the past that prosthetics need to be specifically recommended for diving.
One of the other posters has given you a link to some people, another place you might look to for advise is
e-med. The docs there are all divers, and a lovely bunch If you contact them, I am sure they will be able to give you some advice, or point you in the right direction at least.
Best of luck