Maybe worth having some ‘recap discussions in Spanish’ or a few Spanish-only sessions for the remaining 20%. I expect there are a good number of people who are comfortable in English but much more comfortable, much more efficient, and more willing to speak out in their native language.
In the Spanish community we often have conversations in English, and I think at least 80% of the members are comfortable with both.
Maybe worth having some ‘recap discussions in Spanish’ or a few Spanish-only sessions for the remaining 20%. I expect there are a good number of people who are comfortable in English but much more comfortable, much more efficient, and more willing to speak out in their native language.
Simultaneous text only machine translation might also be helpful.