Decreased movement

So I’m 25 +4 and two days ago my baby was extremely active all day. The days leading up to then he wasn’t as active but still felt a good 10+ strong kicks through out the day. Yesterday I barely felt him until I drank some coffee, got some decent kicks but not as strong as it has been. He was pretty quit after the coffee and later at night was a bit more active but still not as strong kicks. Today coffee only got me less strong kicks again. I felt him up on my left side earlier and now he’s Low on my right- so I know he’s moving but I’m not feeling it , and when I do it’s not as strong as normal. Should I be concerned about this? I have an at home Doppler I used because it usually gets him kicking, yesterday I got a few big kicks from him using it & today just small kicks- but he’s also much lower today; I was almost by my pubic bone area.. Please any advise!