Thanks all! We haven't tried fish yet - waiting until after Christmas when the hospitals are fully staffed just in case! (I know, very cynical, but he got very grumpy every time I had fish when I was bf'ing). Hope that fish is ok, because that will definitely be a good way to go.
Hadn't thought about olives, but I could add them into lots of sauces.
Organ meat - do you mean stuff like liver/kidneys? He's had chicken liver which made me gag when I cooked it, but he loved it! He has lamb, beef, chicken and turkey (leg and thigh meat for extra fat and iron) as well.
Bone broth - I guess that's just like making a stock then but serving it as a soup in it's own right? Well I collected a turkey the size of my kitchen this morning so I can make plenty of broth from those bones!
Coconut - good idea - I usually add that to curries for us, so I'll start adding it into his food as well.
Chickpeas - had some for the first time last night, just mashed into a veggie sauce, with pasta, and no reaction so far so hopefully they will be ok over the next two days to make sure.
Dietician has been pretty poor so far but I will give her another go and see what hilarious suggestions she comes up with!
Thanks again all
x