My dgs was 6 in September and he lost the first of his baby teeth in August [top middle].He has now lost 4 at the top and 4 at the bottom.The two middle ones at the bottom are through but there is no sign of the top ones.Is this normal?I don't want to sound like a fuss budget and he recently had a check up at the dentist.I just wondered how long it usually took for them to come through.