A change in loan amount will not require a new GFE, unless you have an orig fee tied to the loan amount and it will be increasing, in which case you have three days to redisclose, and the GFE can be at the closing table if the loan is set to close within those three days.
It will be prudent to rerun your TIL to ensure the APR has not changed significantly, and if it has, then you have to wait either three or six days after your have redisclosed, depending if you hand delievered or mailed the redisclosure.
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