Having back pain and being pregnant, how do you guide your toddler that mum needs rest and cannot carry her for too long?

I will let my toddler talk to my belly. and tell her. Mummy carry you for too long, baby (while pointing into tummy) will pain pain. Slowly she will be understanding. but do give her time to adapt too.

I will keep telling my toddler and explaining. It need not be only when toddler wants to me to carry. You can do this during bedtime, story time. Make it casual.