Alvin, my regimen was pretty varied, but what I was generally doing is some major snipping, followed by a healing time. I also tried snipping again before healing completed but I found that that didn't really help.
Something which may be of interest to you is to check to what extent your tongue is frenum-limited, and to what extent muscle-limited.
Here's an experiment for you. Grasp your tongue, using say a cotton handkerchief or some other cloth, with both hands close to but not too close to the tip. And pull it. Hold it steady and pull fairly strongly. What do you feel? You may notice a dull ache, which is muscle pain. And you may notice sharper pain, which is from pulling on the frenum. If you have the dull ache, your muscles are being stretched by the pull, and your tongue is muscle-limited; the sharper pain indicates that your tongue is frenum-limited.
Maybe you'll find that your tongue is both frenum- and muscle- limited. It is very easy to overcome the muscle-limitation by pulling the tongue. For that, a sustained pull for say three minutes in the morning (easy to do while you still lie in bed on your back) will overcome the muscle-limitation rather rapidly, maybe even within say a month, and it could be even faster (or slower) depending on how hard you pull and how long you pull.
So it's very easy to overcome muscle-limitation. If you do the above exercise, you'll start to find in fairly short order that the dull ache is disappearing, and all you have left is the sharp pang of frenum-limitation. At that point, pulling won't help stretch the muscle any more, because the frenum is blocking the stretch. Of course, a major cut of the frenum, reducing the frenum limitation, will make your tongue more muscle-limited immediately, making the tongue ready for further stretching through the sustained pull.
In the earlier days, I did some of the sustained pull exercise, to good effect to stretch the muscle. Later, the 'milking of the tongue' doubled for muscle-stretching also.
So in summary, if you are highly muscle-limited, the sustained pull may be better. When the muscle-limitation is over, snipping is needed to reduce frenum-limitation, and 'milking the tongue' I believe helps to stretch the scar tissue, bring the fibers near the surface, and serves to do some muscle-stretching too.