Help please

Hi all I grew these plants thinking they were autos lol they veged for nearly 3 months while my auto finished. They approx 4-5 weeks in flower can anyone give me any advice with wether I should prune etc. I believe it to be velvert bud from seeds man they are growing in souls under. 400w hps thinkignof turming up to 600w

Why prune now?
The stretch is over and it all fits
Grow it out

From what I can see it all looks good so don't mess with it.

Seems like they are doing fine. Maybe get rid of some of the bottom straggly branches that won't get much light. The just let em finish

Thanks for the replies you all seem to think the same so I’ll leave alone