Don’t study ‟during the whole day” but pay attention to taking breaks in between the studying period. Never study longer than 50 minutes straight, otherwise you will overexert yourself! When memorizing vocabulary or simple sentence structures, I would generally recommend the 20/20/20 Method: Learn 20 minutes – relax for 20 minutes and then repeat 20 minutes.
Go through this process twice to three times per day! Reward yourself with movement, fresh air, and healthy snacks, meals and drinks during your short, studying breaks (see below)! At first, begin with the easy subjects, so that you can warm yourself up and prepare for the more difficult tasks!
Don´t worry, the content of the book will show you how easy also more difficult matters will appear to you soon!