Toward Ecosophy

I’m on the second week of color breathing as described on page 30 in Volume 2 of The Dolmen Arch. Today, I did Earth. The sensation of pressure came up quickly and became very high by the third inhalation, but I made it to seven breaths. When I exhaled, most of the green exited with the first breath, though there was enough left to exhale in a way that felt normal. Afterward, my staves told me toughing out breaths four to seven was a good idea… but… Am I supposed to dump that much inhalation all at once? And – is there any significance to the high-pressure sensation or Earth being a stand-out?
Many thanks!
Rhydlyd