Our almost 19 month old DS is a lovely happy little boy - chatty and loves his food etc. BUT he does also bite us quite frequently. Started when he was about 1 when he went to nursery - we’ve tried to be relaxed about it and think it’s just a phase and it will pass but so far it hasn’t and it happens at least a few times a day. Tends to happen if he’s frustrated by something (eg if we pick him up to do something he doesn’t feel like doing) or sometimes when he’s just excited. We tell him no and that it hurts and we think he knows he shouldn’t do it. Any tips ?!