Moving child from cot to crib

I don't think there's any specific age that you "can" but more towards when you "should"! Some children don't like cribs/baby cots/playpen in the first place - like my son. We started co-sleeping since birth on my sofa bed, then we switched to spring mattresses on the floor and subsequently upgraded to foam ones when he started jumping around a lot. The age you should move is when your child can no longer fit comfortably and/or safely in the crib! Either because your child learned how to climb out, or simply outgrew the length of it.

We use mattress for my 2 year old. We cover his room with mattresses and the ABC mat below. It's safer so he doesn't have e risk of falling off the bed!!

maybe you might be interested in this. https://janabebe.com/en/blog/when-do-babies-move-from-a-crib-to-a-bed.html

Actually some parents start straight with bed. ... while some prefer to wait till 3yrs old. It is really up to u

Typically around 18 months. We did it around then

It depends on your preference.