Sheldon is 5 months and so far he has lost 8 teeth in less than 2 weeks...that I can see
He lost the 1st bottom 4 in less that 2 days, then the 4 top were loose and 2 of the adult ones came in, a few days later he lost 2 of those top baby teeth and then a week later the other 2 and new ones are coming in.
It is amazing how fast they loose their teeth.