Soon the OP will be reporting his water heater started leaking a lot..
initial leaks often plug / fix themselves with rust.
the leaks are most likely at a tank fitting, like water in or out, or the thermostat gas valve control.... water runs inside the tank and out at the bottom as at first a small puddle
if a leak can do damage the poster is better off replacing the tank now, since a large leak could occur when no one is home......
my dad in phoenix had a tank leak while he was away on a cruise..
he came home to water leaking out around the front door and 2 feet of water in his home.. he couldnt open door fire department had to break a window to pump water low enough to get door open.
i think it was 15 years ago, and about 20 grand in damages.house on a slab water ruined most of the furniture
his homeowners policy insisted the new heater be relocated to the garage. which is current code in phoenix. garage but a couple feet off floor so a vehicle gasoline leak is less likely to be detonated by a water heater turning on.
for obscure reasons dad didnt want his heater relocated even though insurance said they would pay all costs. he refused and insurance said no problem, they wouldnt renew his policy and no company would write a new one..