As before, if you are clearly having difficulty, we cannot make any promises as to how quick any particular method will work.
There are two factors determining the whole thing, one is the
effectiveness of the method of stretching, and the other is the
duration or amount of time spent stretching.
The Glansie should by all accounts be effective, given that it can be placed
through the tight area before it is opened. It is going to be most effective at the tighter stages of phimosis (and I am presuming you have demonstrated by the "balloon test" that your foreskin is completely separated from your glans), but once you have an opening of a centimetre or so, you would need "snubs" to continue to use it effectively.
I am presuming you have the version with the ratchet, because otherwise I think you will have a problem with fatigue in holding it, which may mean that you do not apply a consistent pressure and in fact, apply too much pressure from time to time, which is not going to enhance your satisfaction with the method. On the other hand, a rubber band would probably substitute for the ratchet.
Even so, the Glansie is not really helpful for prolonged stretching.
The "few minutes a day" in reference to the
GFS may be a slight misunderstanding. Clearly, a few minutes a day
will be quite effective for some people, but you are probably not one of them. The device
is intended to be used for gradually increasing durations, and if necessary it
can eventually used all day, which should be very effective. The design is such that it is quite easy to remove and re-insert (as you would have to, to pee), compared to the "flesh tunnels" which will require some skill.
Not that that is a limitation. The "flesh tunnels" should be quite cheap - though you will need a whole set of sizes, they
may in the end result prove to be the same cost as the GFS. Not that cost should be a concern at all, as any (or all) of these devices are going to be much cheaper than seeing a surgeon!
While the "flesh tunnels" will as I say, require skill to insert, you would only be doing this once (or perhaps twice) a day as they can be left in place to pee (or indeed, even to have sex, I suspect, though they might be a little harsh on the glans and frænulum

).
If you have betamethasone 0.05% as cream, you are far better off than having none, so I wouldn't sweat the difference. I'm merely pointing out what is the
best to make it clear to anyone who is asking. Again, the important thing is to apply it to the tight zone (which means you have to accurately identify that tight zone) and
only the tight zone. What was drummed into us in the lecture on LS, is that the "skin thinning" is
exactly what is desired in using it, until the skin is thin
enough to be normally supple and in your case, stretch as you need it to, then it hasn't been effective enough, let alone any concern about being "too thin".
(Interesting warning, from someone else who I believe
did not use the steroid - you
may however develop "stretch marks" on the foreskin in the process of stretching. If so, tough! No worse than a scar, you see.)