My husband kicks and punches me.

I can’t recall its name but this behaviour in older men is a recognised Thing. My lovely, kind, calm father in law kicked and hut out in deep sleep. Mum in law ordered twin beds. Problem solved

I have the same situation my husband is usually kicking and running. I can feel him starting to move his knees so know a kick is coming so I poke him in ribs or hit his head, that soon stops it.

Is he upset with you?
By that I mean, not enough to do anything by day, but in his dreams/subconcious, he is annoyed with you?

Separate beds essential

I have heard of this happening before and the solution is, as you say, separate beds or seperate bedrooms.

You say this is not possible. Could you not have two single beds with seperate bedding pushed up beside each other, with the separate duvets sindwiched between the two beds.

I would also get your husband to see the doctor - you go with him to explain the problem - there is likely something that can be done about this.

Is he willing to do things to help?

Reduce caffeine?
Pillows down the middle of the bed?

Coosman - that’s naughty 😂

I am curious to know precisely what type of help your husband is able to give you in the night.
You definitely need to sleep in separate beds even if this means moving all other furniture out to fit 2 beds in.
Other options would be a sofa bed for one of you in the lounge or a proper carer or at least an assessment by a healthcare worker for both yours and your husbands’ needs.
Personally -the first time it happened would be the last for me.
All apologies accepted, but this is a tad more serious than say, snoring which is extremely difficult to sleep with. Waking up with injuries is absolutely unacceptable.

Are you very sure he is sleeping? Have you been awake to confirm at any point?

Divorce!

Separate bedrooms.