Likely to result in extreme questioning at entry.. maybe not the second entry but pretty soon after.. a stern warning perhaps .. notes on your file… refusal of entry if you try after that any sooner than 6+ months … Just my assessment of 15 years of visiting family here on ESTA.. one time where i had an unplanned emergency trip .. 3 days only.. then a planned 3 week visit 10 days later … didnt think i was going to get in.
Suggest you find another plan. And definitely do not volunteer,.. tourists don’t volunteer… they visit