Hi everyone, when should I stop my child from being held? Or will he/s…

Hi everyone, when should I stop my child from being held? Or will he/she stop asking for it on their own? He/She constantly cries, I pick him/her up and calm them down, or is it dependent on mood? He/She spends whole days in my arms, but his/her back hurts. I put him/her in bed, and he/she starts crying. In a good mood, he/she lies down, but that's rare. We've been at this for three months.