Reduced movement still at 24w3d

So I posted about this alreAdy recently. I ended up calling my midwife who sent me to the maternal fetal assessment unit at the hospital which was super scary. They hooked me up to a FHR monitor and then left me alone for like 30-45 minutes. Heartbeat sounded great until they left at which point it sounded like it was slowing down and then I could barely hear anything and what was registering on the equipment was like 75-90 bpm! I was flipping out and no one there to explain what was happening. Eventually I hit the call button and asked that the nurse come back in. Well she took her sweet time but when she came back in she said, "oh he's still so small at this point that he moved away and it's picking up your own heartbeat." well gee thanks it would have been nice to have been prepared for that. Anyway, we could hear him kicking the monitor and I did feel a few hard kicks here and there because he did not like that monitor there. But there were a lot of kicks that we could hear but I couldn't feel, which is weird because before a week ago, I felt him kick constantly and pretty hard. My placenta is in the back as of my anatomy scan 3 weeks ago so it's not that. They Had no explanation for why I'm feeling him way less. They just said maybe he's in a different position. But said his heart sounded great and they were not concerned...although they did say "don't wait a week to get it checked out next time." which I felt like was kind of mixed messages. They advised me to do daily kick counts even though it's a little early just to ease my mind. Said to expect 10 kicks 2 hours. I was like, so in one 2 hr period I should feel him kick 10 times and they said no, he should kick 10 times every hour But then they said you probably won't feel him when you're active. Well then how the hell am I supposed to know he's kicking 10 times every 2 hours??? Has anyone else had a week or two where they felt their baby slow down/reduced movement and it picked back up later or it continued but baby was perfectly fine? I don't know how I can take this continuing...it's just too nerve wracking. If I drink a coke (which I would prefer to avoid as I'm already overweight) I feel him move just as hard and often as before this past week but with normal food and drink and activity I don't feel him move much at all. I am feeling so nervous and I've already named my sweet son. I'm so attached to him already that it's terrifying. I know a miscarriage is always traumatic no matter when it happens but I just feel like having one this late especially would destroy me forever.