New COB Lighting during mid flower

-need some advice on something, I had been using a 450 mars LED in a 2x4x5 tent and just built my self a new vero29 cob light and meanwell driver with dimmer. I am in week 6 on flowering, Will i be ok to add the new cob into the tent at say 25% at first and slowly work my way up to 100% of the light over a week. I am slowly trying to introduce as i dont want to stress my plants and cause fox tailing. thoughts? TIA

It shouldn't be a problem.
How many vero 29 cobs and in what configuration?
What size driver are you using?
You'll need around 30 - 40 watts per sq ft for the veros.
I couldn't find the 450 mars led to see it's actual watts.
I take it you want to put the mars over 2x2 and veros over the other 2x2?

Thanks for reply, I have just 2 Vero29 Bs on a MeanWell 185h-1400b so about 140 watts on those I think!? Wanted toThem out, the mars 450 pulls about 200 Watts. I have cobs set to about 25% now and will slowly dial it up. Correct on the coverage