i'm going to solve at least 100 a day for the next 2 months for 'puzzle addict'.
I am a 2300 FM how do I improve at chess?

i'm going to solve at least 100 a day for the next 2 months for 'puzzle addict'.
Tactics can take you up to some level then plateau. Opening Theory, Endgame Knowledge and Middle game strategy separate the IMs and GMs from FMs, and CMs
probably would need a bit more than 15 puzzles a day
Yeah ig. Maybe lie, 20,25? Would that be good for a FM?
Identify your weak areas, find adequate study material and work hard.
I'd recommend you the book "How to study chess on your own" by GM Kuljasevic. The book gives some good insights how to study chess efficient and effective. After reading that book you will be able to make a study plan that fits your needs.