I'm getting fed up of doing duolingo because every exercise takes so long now, I abandoned an exercise last time and I am abandoning this one and I may give up Duolingo and learn Gaelic in another way.
We are in much the same situation as AndrewRoss. The exercises are too long. To do our normal 3-4 exercises is taking us more time than we have - this isn't a full time education course. Some of the fun is going out of learning Gaelic this way.