He let the vet take blood today, had a top up of his B12 jab and his weight is still the same so that's good. He's still eating although the reduction in steroid dose has been matched by a reduction in appetite so he is basically only eating because of the steroids and B12 jabs so I might need to do some top up feeds with Bilbo's worst enemy "Sidney Syringe".
His eyes are still not right and his legs are still very wobbly particularly his back half. The vet picked him up and took him close to the table to see him put his legs up on the table and his reflexes are really slow and his back legs had to be touching the table before he lifted them. He did it again with his hand over Bilbo's eyes and Bilbo didn't seem to remember the table being there and didn't even lift his front legs when they touched the table. His eye reflexes are really slow so the vet said to keep him inside (which we're doing anyway) and make sure he's not in a bright room and due to his legs keep him caged unless we are with him and not to let him near stairs, don't let him jump up/down etc as his back legs just collapsed under him when he tried to jump over the hoover the other day.
We're testing for toxo as whilst the vet said it's 99.99% certain it will be negative due to the fact my cats don't have access to contaminated soil (or in fact any soil!), they don't catch mice and the fact their trays are scooped several times a day and totally emptied and bleached every other day I thought if there is even a 0.01% chance that it might be that then it's worth testing for it.
The vet has said he definately thinks it is a brain problem and most likely some sort of lesion/growth and even if Bilbo does get better he might never be the same cat he was before