I suspect I could do that successfully. What I do instead is give up 0.5% per year and let WealthSimple[0] do it for me. Automatic weekly payments from my bank account get invested in whatever way gets me closer to a balanced portfolio.

It's a big cut for doing something I could do manually but I'm super lazy and it's a percentage of not much money anyways.

[0] https://wealthsimple.com or https://wealthsimple.com/invite/FCU4AG if you want a referral link which gives you (and me) some extra discounts.