I just got my first Jumping spider just over 2wks ago, she's only little about 1.5cm but she has only eaten two small crickets since I got her and is now running away from flies and crickets and jumps into her hide as they pass. I have some calci worms (10mm) coming but I've read that the calcium isn't good for them bc they of course have no bones therfore don't need calcium and don't process it well. Is this true and if not are they safe to feed at this size?