3D Vacuum Mini Sub Heating Times

Hi Everyone, I am new to the sublimation printing process. I have invested just over £600 on some new equipment.
Richo SG 3110DN Printer & a box of 36 coffee mugs.

I was watching a youtube video that was showing the process for sublimating 4 11oz coffee cups at a time.
Pre-heat for 2 minutes @ 190c
Then place coffee mugs into draw and heat for 400 seconds.

But this was for four?
What is everyone's experience for printing
a single mug
2 mugs
3 mugs

or is the 400 seconds the default time when printing any quantity at the same time?
Thanks in advance

I'd stick with one time regardless, and probably 480 seconds rather than 400.

Thanks @Scotty@BMS - I will give that a go as im flying through ym first bix of mugs like they are going out of fashion.

What temp are you cooking at?