Toddler who only sleeps with mommy

Sydni

So any tips on how I can break my one year old from feeling he can only sleep if I'm with him. I can put him to sleep & slowly slide out the bed and he'll wake in 5mins. I wouldn't have a problem with this if I wasn't currently 4mnths with my second child. I'm in no rush but I'd like for him to get use to it before his sibling arrives.