Switching to Top Backoff Sets 5x5

My current numbers: 225/135/250/95/115 (Squats/Bench/DL/OHP/Rows) Started as a complete newbie who never lifted before. Been following the SL5x5 for 8 months now. For 6 months followed very rigorously. Last 2 months have been struggling a lot, specially after squatting 5x5 at the beginning.

Is this a good time to switch to Top Backoff sets? Or should I directly go to Intermediate or Madcow?