The right way of DCA’ing during market volatility.

Bellow you can see my investments.

I have a dilemma about how to DCA in the following months.

I want to DCA around 2k monthly for the next 6 months into the ISHRC MSCI WLD.

What would be the best course of action, put a lump sum of 2k every 1st of the month or split between 4 buys, each buy at 500.

Each transaction on degiro cost me around 2.10gbp.

Thank you.