no.. dont play excessively.. just some gentle playing will do..

make sure u gave her sometimes to wind down during the night. Say she sleeps at 8pm, start your bedtime routine around 7pm. Off the lights, swaddle her.. rock her a bit.. on music.. etc etc.. use some oil to rub her tummy..
massages..

then she will probably sleeps better.

Re the pillow, bumblebee brand has a ready-made ones.

what i did was use a empty bolster cover, put in some green beans, then sew it together at both ends. that way, when baby sleeps, u can put it horizontally on her tummy then fill both sides with beans so that it has some weight but her tummy won't.