Sleep problems with 4yo

[FireFrog]

A little background: We have had a variety of sleeping arrangements during the last four years with DS, from co-sleeping to side-carring to DH sleeping on the floor next to DS's bed. None of us are very good sleeping with others. Especially me. When I co-slept with DS, I was a SAHM. As a WOHM, I must get my sleep or I will not function.

At this time, DS sleeps in his bed in his room by himself for half the night. He is 4. He wakes up around 1 am and gets my DH, who takes him back to bed and then sleeps with DS the rest of the night. However, my DH is now a wreak because DS is a very restless sleeper -- kicking, moving, frequent waking. Due to this, DH is nasty quite a lot, getting somewhat paranoid in his thinking, and starting to not function well at school (DH is a full-time college student).

Does anyone have any ideas to help DS to stay asleep all night? Or is this normal for this age? Should DH and DS share our queen-size bed, rather then DS's full-sized bed? I could sleep in the full-sized one. Is he old enough to establish a firmer routine? (I shy away from anything that is too close to "sleep training," but is there ever an appropriate age for a variation of that?)

Thanks for reading my rambling post. I would really appreciate any help or insight from everyone.

[Katie T]

I would start by having them use the bigger bed and if ds is too wild in his sleeping can you dh keave ds sleeping a find another spot? Like the couch if need be?