Yeah. And if you're not currently plat 5 0 LP, you'd have a little bit of extra buffer too before demotion to gold 1 anyway as your LP trickles down.
Although really it's very difficult to be demoted tiers, so it might be more practical to actually play once an awhile (which you presumably enjoy since you did get to plat). If you're still being matched with plats (or even high gold), then you still have a plat-ish mmr instead of the gold 5 mmr you'd need to be demoted to gold 1 from plat via regular play, so don't worry too much about losing games at plat 5 0 LP until gold 5's and high silver start showing up.