you need to change your routine and also progressive overload

there are few type of progressive overload. not necessary only add the weights
- increase the reps
- increase the sets
- cut short the rest time
- change the order of your workout
- change routine

you like to see yourself chest bigger doesn't mean you can neglect other muscle part. like RyoKenzaki said your body will imbalance & look weird later. you can do chest workout more frequent but try to include back and legs workout into your routine. then slowly include shoulder, biceps & triceps. focus on big group of muscle first.
The ratio is like Chest : Other muscle part = 2 or 3 : 1