With the Foreign Earned Income Exclusion can you choose to take less than the amount you qualify for?

I have been living abroad for many years and using the FEIE (I have never revoked it).  I now want to contribute to my Roth IRA, but the FEIE makes my taxable compensation $0, which means I can't make a contribution.  May I choose to take less than the full amount of the FEIE that I qualify for?

 

For example:

My income is $26,000.  I choose to apply the FEIE to $20,000 and have $6,000 in taxable income.  I then make a $6,000 contribution to my IRA.

 

If this works, please let me know the best way to do this in TurboTax Home & Business.

 

If it doesn't work, is there a different type of retirement account that I could use?  My income is from a multimember LLC, so a SEP IRA would be an option.

 

Thanks for any help!