Did some calculations:
For upgrades to level 4 and 5 you need a total of
- 1125 wheat
- 975 feather
- 720 worms
Even if I don't consider twigs (will get the required when harvesting wheat) and the 360 roast chicken which I hopefully get collecting the feathers, it will need 2820 energy (with a 100% rate chopping rocks).
Keeping in mind I get 20 energy per hour, it is 141 hours non-stop playing which is roundabout 6 days without sleep and work....
Come on S8, are you kidding? No way to finish within the given time except using a considerable number of gems