look closely at each stem tip ....what do you see ?
if you see new growth - tiny new leaves, that means dormancy is over - and time to resume watering
but -
if you see zero new growth .... no new tiny green emerging leaves ...old leaves appear to be yellowing or falling off .....- and - stem tips appear bald - perhaps bare -- this means the plant has entered dormancy - stop watering - not even a sip
during dormancy - adenium will use its reserves stored in the caudex .... this "use of resources" causes the caudex to shrink ..... it is this "caudex shrinkage" that causes that small gap between the dirt and the caudex (all around it) .... the gap will grow larger as dormancy continues .... and this is completely normal and to be expected .....
as dormancy breaks or ends ...and watering resumes - that gap between the dirt and the caudex will close ....everything back to normal