How do u co sleep but still share bed w/ Spouse

I want to try co sleep the next few days because one of my twins have a cold and I want to sleep close by him. But do I tell my husband he can’t sleep in the bed, we have king size bed. Baby is 2 years old. I’ve never bed shared over night with the twins this will be a first and I’m nervous but also nervous of him sleeping in his room alone with a cold. Before when the boys got a cold I slept in they room on floor but this momma is 36 weeks pregnant there will be no floor sleeping lol. 🤷‍♀️