E6 washing

I've been doing B&W slide processing following the Ilford recipe. But never color slides. I'm now reading the Tetenal instruction .pdf.
It says 2 minutes and 30 seconds for first wash, the same for second wash and 4 minutes for the third wash. It also says:
"Carry out rinses with running water or change water every 30 secs. or rinse over longer periods."

I'll have to do hand processing in a Paterson tank. Would it be OK (or better) to do the washing I'm used to from the B&W Ilford process? Like:
water and 5 inversions
new water and 10 inversions
new water and 20 inversions
new water and 20 inversions

If Tetenal recommends 4 minutes of final wash, and a water change every 30 secs., then I would interpret this as "use at least 8 batches of wash water". Color films have three times as many emulsion layers, and therefore require more extensive washing than B&W film stock.

Thanks for a good answer!