Hi Belle1
No reason at all why not - it's more natural actually to have a more even dose to give more consistent levels. When the ovaries produce progesterone after ovulation, it is given out in regular pulses through the day (can't remember the figures) and giving it as part of HRT can't possibly re-create that - it is but a crude way of replicating the delicate balance of our natural hormonal system! Give it a try and see how you feel?
Hurdity x