There are a lot of great suggestions here re: losing weight, more aero, getting stronger, etc. And from a very practical (and brutally honest) perspective, these are DEAD on.
I think we, as humans, are often guilty of looking for “cheat codes.” It should come as no surprise that some of the most frequented posts in this forum contain “tips” or “tricks.” Everyone wants the easy way.
The practical answer is that there are no shortcuts - it’s commitment to a steady progression of weight loss and power increase. You might still be a bigger person, but dropping those kg are going to make an ENORMOUS difference in your climbing. (This is coming from someone 6’2" who has dropped from 225lbs to 175lbs over the past 6 years. I still provide a great draft, but go uphill MUCH faster).
Keep showing up, getting your butt kicked, and double down on healthy and steady weight loss. Build your power. Make this a habit. Your progression might surprise you!
Cue the military dad in me - I have to tell my teens often that there are very rarely shortcuts in life. When there are, they often come at a cost.
EDIT You’ve previously asked the same question on this post, and got good advice. There’s still no shortcut, even in 2022.