err...now? Unless you have reason to suspect that your baby is going to have a reaction, there's no real need to wait around: one of the great benefits of leaving weaning till 6 months... Whether baby will like it at first is another matter - both taste and texture bother some kids (but we've been hearing elsewhere on the site of a baby who eats cheese but refuses many other things, so who knows?) Anyway... my Beeble wouldn't eat raw cheese at first, but would happily eat pasta in a cheesy sauce. She's now decided she *will* eat a lump of cheese, but only if she sees Daddy eating it first and can swipe it off him. Babies.... PS to the lactose-free cheese mum who alas didn't get a prompt reply. A Google search for 'Lactose-free cheese' brings up an impressive range of UK products and suppliers :-)