I have to politely disagree with point 2. There are distinct differences in markings and colouration, but I do agree that Eastern and Western hatchings are more difficult to tell apart.
Please read this thread top to bottom and ask further questions if you're unsure on any of the points: Thread 'Info For New People. Please Read This First.' https://www.tortoiseforum.org/threads/info-for-new-people-please-read-this-first.202363/
Basking spot needs to be 35-37 degrees Celsius...
I'm sorry this is happening. If he has moved, could anything be stuck in the tortoise's throat? If you think he is alive can you make an emergency appointment with a vet?
Based on the plastron markings I do not think this little one is an Egyptian tortoise https://www.hermannihaven.com/testudo-kleinmanni
Can you post photos of the tail and hind legs? If there are 2 tiny spurs (will look like white dots at this age) on each inner thigh either side of the tail...
You can buy dried mulberry leaf to add into your mixture of foods. Dried goods are great for adding extra fibre, particularly when many of us become more reliant on supermarket produce in the colder months.
For commercial foods, you might like to try Nutrazu (European equivalent of Mazuri), Zoo...
You can get 60L bags of Habistat orchid bark from Internet Reptile for a decent price when available https://internetreptile.com/products/habistat-orchid-bark-substrate?variant=42476439175416
He won't suffocate! It sounds like normal behaviour, so no need to disturb him. Yes, he should resurface in the morning to warm himself up to optimal temperature before eating.
Good morning! I'm inexperienced with brumation so I'll be following Tom's brumation thread. I'll start their fast towards the end of the month for two weeks before reducing temperatures/shortening days for another two weeks.