Due to some kind of funny Android sick sense of humor, I wasn't able to start this challenge until about 36 hours into the full event. Because of this thread, though, I had been making swords like mad, force-closing, checking for updates, wash, rinse, repeat...it finally worked.
Thank goodness for those 30 minute adventures because I was able to complete two days' worth of challenges in no time at all and even had spare time to collect all of the seeds I would need for the full event.
I managed to have all of my petals before I had to focus energy on the forest wood and forest spirits. Knowing ahead of time that I would need at least 40 trees helped.
I managed to have all of my extracts and nectars and potions and essences finished before day 10 started, and without needing to use any gems.
[removed private health info... SW]
In short, I'm fairly certain that I couldn't have otherwise completed this event of I not had the ability to make it my temporary full-time job and if there had not been the Lewis & Clark expedition going out ahead of the rest of us to trailblaze the day. It helps, too, that I just ignored a lot of building collections and focused on petals and chopping wood. Today was my first day to collect from everything and my Apple tree took pity on me by giving me a golden apple. That may be the best part of the last10 days.