Lifting toddler?

SM❤️
Currently pregnant and I have an almost 2 year old who weighs roughly around 23 pounds. I was reading that doctors don't recommend lifting anything over 20 pounds. My daughter doesn't walk yet due to her health conditions, she is delayed. And we have no family or help where we live. And I feel like every time I pick her up I pull a muscle in my stomach or instantly start to have cramps. Anyone have any advice regarding this situation or have a similar experience?