No， is not an efficient use of your time. Therefore。
do her basic step-by-step course， but if you do it systematically and learn it by heart， I would recommend you to play fast blitz games until you lose this habit. Then you can play slow deliberate games again. I have not seen one of your games， slowly， you are not using your time efficiently. Do one pass of the “Easy Life and Death problems” and the “Reading Ladders” on Guo Juan’s website without peeking at the solution and report back if they are easy for you. They are much easier than tsumego pro. I question the amount of time you invest in writing and reading the reddit thread. It seems to be comparable your weekly allotted go time. If I had to guess why you do not get better than 23k automatically like some other people。
as she recommends. I recommend that when you do the exercises there that you only mark them correct if you have the right move and you remember the context of the lecture what this move is all about. This course alone plus basic tsumego is more than enough to be solid SDK. The tsumego you are doing are obviously too hard for you. I am 5-6kyu on ogs and Tsumego Pro easy problems are not super-easy. Do easy problems. It is not a problem if you occasionally look up a solution， but at 23kyu it should gain you several stones if you do not play too close to your opponent and you check if one of you is in atari or will be after a move. ， again， you should know better. Since you signed up for Guo Juan’s site， I would say “overthinking” which， “30+” is not “old”. Get rid of this ridiculous idea first. At your age，。