How doable is REG before 5/16 if I’m taking TCP 4/15?

So as the title states, I’m currently studying TCP and am about 90% done. All I have left is the last module in T4 and then I’ll be reviewing until my exam on 4/15.

I would really like to take REG before the score cutoff date on May 16th so I can get my score back by the 27th. The only problem is I graduate on May 14th so I will need to sit for REG by May 12th at the latest.

For those of you have taken both or just REG, how doable do you think it is to be ready for REG with less than a month if I’m rolling straight into it from TCP? My concentration is in tax and I don’t think entity taxation will be an issue. I’ll have to brush up on individual and basically start from scratch with business law.