HI there....I have two Hibiscus that I need to bring indoors for the winter. I have had one of them for two years that I wintered indoors last year and it almost died. They are both VERY large in huge pots. Couple questions--1) Do I prune them back before bringing in to make more manageable? Should you prune them annually to shape them (they look wild) and 2) what indoor temp/watering is best?