I have bought the teething relief, but I am not sure if it is really helping. The instructions on the bottle says to give a dose every half hour for 4 doses then one dose 4 hourly after that. Do you have to do that every day that you give it to them? I always forget to give it to him half hourly at first, LOL, and only remember to give him some when he is in obvious pain, will it still work like this?