Congratulations on your 16/17 days! That is a great start.
Problem with motivation is: it’s fluent. Sometimes high, then low. And your addiction is taking advantage of it. In the low moments, it will sneak in and suggest drinking again, that’s for sure.
So, you need to prepare yourself for these moments, because living a sober life is the best thing you can do, no matter if motivation is high or low.
There are different ways to do recovery work. Read around here and find your way. Maybe this thread is helpful for you: What's YOUR plan?
Keep on going, find your plan, beat addiction, ODAAT!