DS is 4 and has always been very attached to his dummy. We finally weaned him off daytime use about a year ago but he still has it at night and for long car journeys (it helps with travel sickness). A couple of months ago we were building up to getting rid of it at night too and had had some quite positive conversations with him about the dummy fairy, etc. but the last few weeks his attachment to it seems to be getting stronger. He's started going to his room in the middle of the day 'for a rest' and wants to go everywhere in the car so he can have the dummy. This morning he came downstairs with it in and refused to go out without it (which resulted in us all abandoning plans to go for ice cream on this lovely sunny day). I am really torn between thinking we need to nip this in the bud and go cold turkey day and night... and thinking he must need extra comfort at the moment for some reason and we should let this phase run its course. What should I do?