is my 6-8month solo travel itinerary too ambitious for my first time?

Looking to spend several months abroad mostly traveling and exploring while studying on my own .

I haven’t travelled internationally since 2020. I live in the US and so far here is a rough look at my itinerary:

CA -> Japan 1 month -> Indonesia 3 Weeks -> Thailand 1 month -> Turkey 1 month -> Egypt 1 month -> Greece 3 weeks -> Switzerland 6 Weeks…..

7 countries, ~ 7months. I plan to leave around September/October. What are your thoughts? Is this too much? How much time would you recommend to stay in each country? I don’t think I’ll have another opportunity for a long travel anytime soon after this trip so I want to hit a-lot of spots on my list.

Any tips/advice/useful links are appreciated.

is my 6-8month solo travel itinerary too ambitious for my first time?