My intention here is to combine these four spells to let me amass an essentially infinite number of Spells through infinite Simulacrum whilst maintaining RAW and RAI rules. Please note why my combination presented won’t work with citations from either whom or where you are getting your information. Everything below is assumed to have enough provisions (Food, Water, Beds, etc) to survive and the character level is of a level capable of casting all spells listed below.
Step 1: Create and enter your own Demiplane full of your Provisions.
Step 2: Wait 24 hours.
Step 3: Cast Glyph of Warding at an 8th level, Cast Simulacrum into Glyph of Warding vía Wish Spell. Set it to trigger when I step on it and click my ruby red slippers 3 times.
Step 4: Wait 24 Hours.
Step 5: (Now with full spell Slots) Step on Glyph and click my ruby red slippers 3 times.
Step 6: New Simulacrum is formed, Simulacrum uses 8th level Slot and 9th level spot to cast an 8th level spell, replicating step 3.
Step 7: Simulacrum proceeds to waste all of it’s spell slots Creating Glyphs or casting spells for me without me having to do anything other than provide material components.
Step 8: Simulacrum has used all spell slots, I Proceed to Glyph and (Per RAI) my old Simulacrum is destroyed and a New one of me with all of my spell slots is made.
Step 9: Sit back and enjoy infinite spell slots essentially.
Other than the caveat of having a 200GP cost for my Glyph of Warding every time, is what I said feasible albeit lengthy?