If you have them in pots - remove the yellow leaves and leave them in the pot over the summer. It's ok if they get rained on in the course of the summer. It's better that they don't stay damp. though.

Repot sometime in November and December using a free-draining mix.

When the leaves show through put them into good and direct light for all the day. Water prudently and don't let them 'stand' in water.

They produce their leaves over winter to be ready for spring flowering.

When you put them out to harden off in spring give them some rain shelter as spring deluges can spoil the flowers. Once hardened off they will take some frost. (About four degrees. Protect the flowers, though.)

You can give them foliar spray up to when the buds are starting to show colour. Stop at that point. You can also feed after flowering; perhaps with half strength tomato food.

If you know your variety is a tall grower, put in your support system when you plant them up. They'll do better when they have stem support.

Thank you very much for taking the time to respond! I now know I was over watering them. I will follow your advice.