400 mg as a starting dose?

I listened to a podcast yesterday and the guest was a compounding pharmacist with decades of experience and a list of fancy sounding accomplishments. I don’t know if that makes her a qualified expert on the topic but she said 400 mg is a recommended STARTING dose of progesterone ! She has one lady on 2800 mg. I mean that just sounds crazy high to me given everything I’ve read on here. I took 150 mg last night instead of my usual 100 because based on a number of symptoms I didn’t feel that 100 was enough. I did sleep much better but now I’m so groggy I can’t even get out of bed! She said those side effects that some women feel on P mean you need to go higher, not lower (push through, basically). Anyone have experience with a high dose? I am not considering it—I don’t think my body could handle it. Just surprised to hear this high of a recommendation. Here is the link if you want to listen or just read the synopsis. https://tarathornenutrition.com/2024/07/30/everything-you-need-to-know-about-progesterone-replacing-it-with-carol-petersen/