I know our bed time is alot later then alot of kids but I don't know how I could make it work doing it earlier.

We need to get him going to sleep on his own but in order to do that I need 2 parents here, I can't put the time needed to help evan become a good sleeper while I have 2 (soon 3) other children to care for at the same time.

Im going to do some ring around & see what help I can find locally.
I don't think anybody could do it on their own. Is there any chance DH could take a few days off work to sort this out with you? If you had a weekend and a few extra days there's a chance you might be able to get Evan in the habit of a new routine. It sounds like you really need DH to help you out...

You are doing a good job to manage three kids while you are pg and I hope this is just a small bump in the road!