Takes several minutes to load Minecraft and get to main menu

Minecraft was slow to load before 1.19 on XBox, but now with 1.19 it is even slower. The initial red Mojang splash screen takes a minute, then the screen goes blank for a minute or two, then it goes to the screen with the progress bar which takes a few minutes (sits at 42 and 50% for quite a while). Then finally it gets to the main menu which is laggy for a few moments and then all good. Far more graphically intensive games take way less time to boot up on our XBox.

My son is a prolific 'new world' creator so we have possibly hundreds of new, small worlds. I'm not sure if this could be a factor – loading a long list of worlds on startup? We seriously start the Minecraft app then walk away for a bit because it doesn't make sense to sit around while it loads.

It feels a bit silly given that PC takes so little time to start up. There must be a way to improve this.