The group may be brought out at different times, depending on the health of each person, a Thai official said.
“All 13 may not come out at the same time. If the condition is right and if that person is ready 100%, he can come out,” said
Narongsak Osatanakorn, the Chiang Rai provincial governor.
Mr Osatanakorn said the group are still recuperating and a daily evaluation is being made of their fitness.
There will be no evacuation if there is any risk, he said.
Seal commander Rear Admiral Arpakorn Yookongkaew said there was no rush to bring the group out of the cave, since they are safe where they are.
However, some officials fear that forecasted heavy rains this weekend could force them to bring the boys out earlier.
The current water level in the cave means the boys, who cannot swim, will need to dive more than 1.2 miles to get out.
:: Meet the British hero divers who found the missing boys
Rescue experts have said this would be extremely dangerous as the route is complicated even for experienced divers.
Mr Osatanakorn confirmed that the boys have been practising wearing diving masks and breathing, but he doesn’t believe they have attempted any dives.
Meanwhile, authorities are still exploring other options, such as scouring the mountainside for other ways into the cave and finding faster ways to pump water from it.
Another option still being considered is to provide the group with four months of supplies to enable them to wait until the water subsides.
Offering a glimmer of hope for the families of the trapped boys, Mr Osatanakorn said that a new cave, suspected to be connected to the complex the group are situated in, has been discovered.
Additionally, two main routes of water flowing into the cave have been identified and blocked.
A spokesperson for the British Cave Rescue Council, which has members taking part in the operation, has advised that “although water levels have dropped, the diving conditions remain difficult and any attempt to dive the boys and their coach out will not be taken lightly because there are significant technical challenges and risks to consider.”
:: How the trapped Thai boys were found
The group are being looked after by seven members of the Thai navy Seals, including medics, who were staying with them inside the cave. Some of the boys have been treated for minor cuts on their feet and legs.
They were mostly in stable condition and have received high-protein drinks.
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