Hi there,
I am rated over 2400 online (https://www.chess.com/member/ppandachess). I created a free course that will teach you a training plan to improve. Feel free to check it out: https://www.panda-chess.com/daily-improvement-plan
As it turns out, I already know your website and have your training plan. But I thought it might be more suitable for rapid and blitz has different training methods.
Every time I play it just seems like I blunder something trivial or lose on time. How the hell do i even cross the 2000 blitz rating mark?
Accurate problems for a 1700-1900
A couple things that helped me were 1.bullet sped (or not)
2.endgame endurance and swindle practice(you need to kind of force or "convince your opponents to blunder " or at least make the position difficult)
3.positional play and hanging pieces less(or at least at a higher level you never really stop hanging pieces ) 1800s are horrible at positional play
But idk what your individual problems are I haven't looked at our games yet but you should be using most of your time anyway