HopeAlone, the progesterone debate comes up time and time again on here.
The only way to be 100% certain you are getting the right dose of progesterone is to have a uterine scan, everything else is guesswork to a large extent and no doctor can tell just by talking to you from the other side of a desk. The NHS licensed dose is a 'catch all' dose which tries to cater for worst case scenario because routine uterine scans are not offered on the NHS. Most women will be OK with a lower dose of progesterone but some will not and of course there will be women who take the maximum (licensed) dose and still have problems with lining build up. It is not an exact science or a one size fits all situation. You will not know until you have tried the progesterone and established how well you tolerate it and preferably had a scan to make sure everything is OK. Many women don't have any problems with progesterone but if you find that you do, the only way to make HRT work for you is to reduce the progesterone dose and have scans - a far better option than either suffering or giving up on HRT completely.
I am progesterone intolerance and was prescribed 3 pumps of Oestrogel every day and 100mg vaginal Utrogestan for 7 days each month (although I ended up taking even less than that under supervision) and I have never had a problem with lining build up but of course some women might.
If the other patches didn't stick, have you considered Oestrogel? You simply rub it on your skin, it is very flexible and easy to adjust the dose up or down.