Pattern ideas for preemie blankets/booties?

Can anyone recommend a pattern and a good yarn for a preemie blanket or pair of booties? My 2nd cousin had preemie twins (here’s a picture of one:)) in December and they’ll be in the hospital nursery
till March. So I’m not sure how big they will be by then, but I know that if I want to make them something I need to start early :mrgreen:. Right now they weigh 3 lbs. 10. ozs. and 2 lbs. 9. ozs.

Any ideas would be appreciated! Thankya!

There’s some here you can check out

and here: