My question is: should I hold off on the weekly DCA contribution until the market settles down?
No, no, no, and NO!! Why do people sign up for a passive investing system and then try and be active investors?
You have a diversified portfolio--that's great. However, do you have a written investment plan for that and keeping your allocations proper? Mine involves rebalancing at the end of June and end of December (bi-annually) if allocations get out of whack. That means I did it at the end of June--moved riskier stuff to "safer" stuff (bonds). It's counterintuitive (at the time) to do this--selling some of your rockstars to put in the dogs is like chewing glass. The primary purpose of diversification isn't to try and get the highest percentage return possible until it's time for FIRE, it's so that when a given market takes a dump I don't smell the fumes, panic, and act like a fucking idiot.
Tinkering is not allowed. Tinkerers always fail compared to others. Set your personal investment plan and then freakin' fuggedaboutit. In your case it seems to look like: 33.3% bonds, 77.7% equity, DCA, rebalance if necessary on a
pre-chosen date (annually or bi-annually), and otherwise leave it the fuck alone. :)
....should I double down?
Should I increase my weekly contribution from $375 to $750 ? If I did this my DCA would only last about 6 months.
Alternatively, do I make an even lower weekly contribution and stretch out my DCA money?
No, no, and again--fuckity NO! Are you sure you're a passive investor? Don't tinker with the system. Leave it. Go have a nap. ...Or watch a movie. ...Or smoke some hash or somethin'.