How can you be out of form when you haven't had a match?
how you feel in the nets is irrelevant - it is how you feel when you walk out to bat that matters. Just keep working and grooving and challenging yourself in practice and you will be fine.
A Ken Barrington quote, to back this point up...
Famous for mixed metaphors, his best-known quip came in answer to a Surrey fan commiserating over his lack of form after a sequence of four low single-figure scores, two ducks among them. "How d'you know I'm out of form?" shot back Ken indignantly: "I've only had nine balls all week!"