When we had to get DS out of sleeping bag, we got him the toddler blanket and pillow from IKEA but it was just difficult to make sure he was well covered (without the calling in the night). I ended up giving him a single blanket and wrapped it sideways tucking it around the mattress, like a sleeping cocoon/bag iykwim. It worked really well, no call back, and we kept it that way till he moved into BBB. Much harder to fall out of bed.