dear aspirant,hope you are doing well.now coming to your question,this is the tenative schedule for Mop-Up round:

NEET Mop Up Round Counselling Schedule
Events
Tentative Dates
Display of Seat Matrix-14th August 2018 to 15th August 2018
Online Registration and Choice Filling-16th August 2018 to 18th August 2018 (till 5 pm)
Payment of Fees-Till 18th August 2018 (till 12 Noon)
Choice Locking-19th August 2018 (10 am to 5 pm)
Seat Allotment-20th August 2018
NEET Mop Up Round Result-20th August 2018
Reporting to Colleges Allotted to the Students-21st August 2018 to 26th August 2018.

so plan accordingly for Mop Up round.hope this will help.