Can someone help?? My ex and I want to share custody of our son. I need to come up with a schedule…

Can someone help?? My ex and I want to share custody of our son. I need to come up with a schedule or he wants to take him a week and me a week but honestly I took me 4 years to conceive him and I can’t be without him a week straight. Can someone help with a schedule ???

I’m off Monday and Tuesday

He’s off Saturday and Sunday

We want to give each other 1 weekend to ourselves (our days off)

How can I make this work. ? We’ll start in March.