Sub-6 7x7 Help?

[RhysC]

I've really been stuck at around 7:00-6:30 for 7x7 for a while, and am having trouble improving. The cube I use is a mini Shengshou, I might post splits later.

Any ideas for improvement?

 

[Rocky0701]

Do a ton of 5x5 and then go back to 7x7. It seems stupid, but it helps a lot.