Mary Sue Ittner wrote:

I find a deep saucer under the plant helps. The water applied to
the top does run through, but when caught below tends to be taken up
as if by a wick. The other possibility, though terribly
time-consuming, is to immerse the whole pot in a bucket or large
container of water and let it stay there until the bubbling ceases,
indicating that the soil is soaked. Often it will "float" in the
container when really dried out. Then I place a smaller plant on
the container to hold it down into the water until it has begun to
soak up the moisture and no longer tips over in the water.