I have the same problem with lining and have tried everything (red raspberry leaf tea, pommegranate juice, pineapple, protein, acupuncture...). I think I'm beyond help from supplements and such. I think those might help if your lining needs a teeny bit of a boost or if you are not getting enough of those things in your diet.
I don't know about progesterone. I've been on it several times but as my FS does not to transvag US during LP, I don't know if it actually helped me.
The only thing that has helped me is estrogen. When I was taking estrace (4 mg/day) from the time my follicles got to 1.4 cm (so about day 8) my lining was 0.9cm (from 0.6 on a natural cycle) at O.
Maybe ask your FS if she thinks estrogen would help you?
good Luck!!!