On what deeply actually means, since the phrase is useless without a number.
You are aiming to wet the soil to the depth the roots occupy: for most vegetables somewhere around fifteen to twenty-five centimetres. A light daily sprinkle wets the top two or three, and that is the problem: roots grow where the water is, so shallow watering produces shallow roots, and shallow-rooted plants then need watering every day. The habit creates the dependency.
How to tell you have got there:
Water, wait half an hour, then dig a small hole at the edge of the bed and look. This is worth doing exactly once. You will find out how long your hose or can needs to run to wet the depth you want, and after that you know your number.
Most people are shocked by how much water it takes, and by how little a couple of watering cans achieve on a bed.
Then water less often and much more. Twice a week deeply beats every evening lightly, in almost every soil, in almost every climate.
Water the soil, not the leaves, and water in the morning if you can. Evening watering leaves foliage wet overnight, which is how a lot of fungal problems start - and it is a second reason your evening routine may be working against you.