Dry skin with Retin-A
Retin-A stimulates skin cell turnover, so that "dry" skin is the older dead skin cells collecting on the surface. It takes about 3 days after applying Retin-A to see what it does, so you are dealing with several days of intense stimulation! Stop the Retin-A for a week, and re-start no more than twice a week, gradually increasing the frequency as your skin adjusts (remember the 3-day delay!). For now, gentle washing and moisturizers will help you get through the next few days.
Flaky skin and Retin-A
Flaky skin is a common side effect of Retin-A use. There are two main options - 1. apply the Retin-A (make sure you are applying it to a DRY face) and then apply a nice moisturizer over it. or 2. use the Retin-A less often (like every other day, or every third day). You don't have to have flaky skin to have Retin-A be effective, so choose whichever of these options is preferable to you, and it should help resolve your issue.
"This answer has been solicited without seeing this patient and cannot
be held as true medical advice, but only opinion. Seek in-person
treatment with a trained medical professional for appropriate care."