How do you function with fussy babies?!

My son turned 4 months old over the weekend. He's always been quite a fussy baby but he's upped the ante by quite a bit over the past couple of days!

My husband goes back to work in the office next week. We were lucky that he's had 4 months off to help me. I've relied on him quite a bit. I ebf and baby won't take a bottle so I do all the night wakings but my husband will wake up in the morning and let me shower in peace.

I then eat breakfast and have a cup of coffee in peace.

Then I do tend to baby pretty much all day whilst my husband works from home (not strict though, he's able to step away whenever) upstairs. My husband makes lunch for us or will take baby so I can. Then will make dinner. And clean.

This week, my husband has voiced that he's nervous how I'll function without him next week. And before my son turned 4 months, I felt it would've been fairly easy as he could be in his bouncer or the carrier.

But in the last few days he's learned how to roll so he's started rolling in his bouncer which means his neck is all backwards and he cries because he's uncomfortable.

And he's been scream crying in the carrier.

He also scream cries during tummy time.

So there's absolutely nowhere for me to put him down so I can get anything done.

My husband went into the office this morning to give me a test drive. And I've broken down in tears three times. I feel at the closest edge ever. I just want to put my son down, get in the car and drive off a cliff.

How am I supposed to shower without my son breaking his neck in his bouncer? How am I supposed to make lunch or eat if I can't put him down anywhere? When am I supposed to have a break??

He only naps on me. We've spent the last 2 months trying to transfer him to the cot we have downstairs when he naps and he never transfers well, he always wakes up and then won't go back to sleep so he gets overtired. Its much better for him to just sleep on me because I'm so desperate for peace and quiet.

I dont know how to tell my husband that I've failed his test today. How do I go to the shop? Eat? Clean? Shower? Function like a human being if my baby outright refuses to be put down or worn?

I've tried three different carriers. I've tried slings. I've tried forward and back facing. He whinges or cries in all of them.