Here's my update:
Aor 31st Dec
MEP: 23rd Jan
BIO: 24th Jan
RPRF: 6 Feb (Paid same day)
Additional doc section changed to "Your doc have been uploaded" same day then on 16th Feb, changed to "We are reviewing the additional doc you provided" on 15th Feb. Finally on 8th March, it changed to "Not Applicable"
I got a total of 2 GU: 1 on 6 Feb and another on 8th March.
How far is my case from here? Is "Not Applicable" a good sign?
I was excited after the status change and was expecting an early PPR but whole system has came to a halt!