Yes, it by any means you reached that points where you get 4000 watch hours, you can easily do this by making a playlist, adding all your videos to that playlist, and play it, automatically watch hours will be added to your account. Let do some calculations: 4000 hours means 166.66 days, which means 5.5 months of continuously watching your own videos with the same IP. 5.5 months is nearly half a year, I repeat, half a year.

First of all, you need to understand that YouTube own by Google and they know what game you are playing with them. Just watch any NETFLIX series and then go to YouTube, there will be definitely two or three videos related to that play. This thing happens to me more than a dozen times.

The question you need to ask yourself is, why you need YouTube monetization that bad? I mean, look, consider that you got the monetization, now there are three points I want that you understand it.

1. The first point is that your YouTube watch hour will decrease because if on 1 December 2018 you have 30 watch hours, and on 1st December 2019 you have 20 watch hours then that will let YouTube reduce 10 watch hours from your monetization tab.
2. The second thing you need to understand is that YouTube pays you when someone clicks on the ad or watches a complete video ad. When you get to 4000 watch hour you got monetization but no views. So, how you gonna make money?
3. The third thing is, even if you reach 4000 watch hours, YouTube reviews your account, they check the type of content you have uploaded, how are the videos helping the YouTube community, and how you get to 4000 watch time? I know a guy who uploaded copyright content, he has 3k subscribers and >5000 watch hours but still, YouTube rejected his application and give him 2 more months to make sure he upload original content.

Try to make an impact even that impact is smaller than a fraction. Build a community that watches your every video, go niche, niche YouTube channel has more chances of getting successful than a channel that uploads for just for the sake of uploading. If you work hard in those 5 months, finding keywords that people are searching on YouTube then I am sure you will build something that will be more powerful and entertaining than watching your own stuff. I highly optimized my videos for search and now I am getting 30 to 40 watch hours every day. I have more than 1.3k subscribers and most of them are very much interested in the topic I am making videos on.

You Can Read my answer about How to get 4000 watch hours on YouTube here: Theta Writer's answer to How do I get 4000 hours of watch-time on YouTube?

Edit 1:

Here is my channel stat.

If you want to read more such posts related to YouTube, Blogging, You can read this article that explains it very well Can I Watch My Own YouTube Video To Get 4000 Watch Hours?

I hope this helps.