The advice given in the British National Formulary is that infliximab should be withdrawn if after 3 months there is no affect; so expect your doc to be patient, and he's hoping you will be to.

sublata causa tollitur effectus as we say

'Then you should say what you mean,' the March Hare went on. 'I do,' Alice hastily replied; 'at least - at least I mean what I say - that's the same thing , you know.' 'Not the same thing a bit!' said the Hatter.