Similar question for pronunciation; if it’s something like 三 where the pronunciation for the recommended form (さん) is nearly identical to the Mandarin pronunciation (san), am I hurting myself long term by just remembering that that one happens to be the same?
For the record I’m not fluent in Chinese, I took Chinese school for a couple of years but the place I was at was mainly oriented towards people who were already fluent in speaking and just wanted to learn to read, so the pace was too much for me.