My mum years ago did this ago to hers and we had to dispose of it. I have 3 large ones in my garden and I do not touch them, perhaps new ones would be your best bet. Somebody has replied to my email about pink ones and white ones. Dave has sent me the website and I am hoping to get 3 white ones. Website below.
Hi Cathya, most ceanothus need pruning in March and they generally respond very well indeed! However, if you pruned it in the Autumn, like many people tend to, it will take a while to come to a flowering condition. If it was hit by the frost during the period after pruning it may have been damaged and this may cause an irreversible stunting. Give it one more year and see what happens and if you do buy another be sure to prune it in March- just before it starts developing it's flowers. This also goes for most hydrangeas and other flowering plants that flower on 'annual' growth.