Reneuron - second time lucky?

Depends on why you are investing Angel.
It is very difficult to predict the bottom or top so I wouldn't try.

If you are a believer in the company and it's future success, 5 or 10p here and there will be irrelevant because success will send the share price up multiples from where it is today. Failure will wipe them out so again worrying about a few pence today is not worth it.

You either back the company or not, it's high risk / high reward.
You have to be prepared to lose ALL in the hope that RENE succeed when you will be hugely rewarded from these levels.