During the day my 4 month old mini is an absolute darling. He loves to play but calms down when playtime is over. But after about 9:00 pm he starts getting wild and when we put him in bed (he sleeps with us in our bed) he goes absolutely nuts, jumping around, biting us and manically scratching the covers. We have tried everything including giving him a small snack at bedtime, more exercise during the day, and a calm bedtime routine. Before going up to bed we always take him outside for a quick final pee, so we know that’s not the problem. We also bring his favorite pillow to bed for him to sleep on. Nothing seems to help. Any suggestion?