A little advice please..

I feel like I post on here so often, but you ladies really do help me a lot, so thank you in advance..

I wanted to know if babies movements change significantly towards the end of pregnancy.

To start off, I am 35+4 weeks along, exactly 1 month until my due date; 29/08/20.

What's been happening is even a week or so ago, baby was moving about like crazy, my belly would be distorted as he would move around and he was constantly active. By that I mean, I wouldn't even have the time to think about his movements before he would move again..

This past week that has all changed and as soon as I noticed a reduction in his movements, I called my hospital and they told me to come in.. the moment I was put on the monitor, he was absolutely fine and started going crazy in there but as it was my third time in for reduced movements, they wanted to scan me again, even though it had only been 10 days since my last growth scan. Everything looked fine and healthy, this was on Monday.

Today I had a midwife appointment and his heart rate was fine, he was moving about after being quiet for a few hours. As soon as I started getting worried, he moved. I brought this up to my midwife and she said if I am ever concerned to keep going in for the monitoring.

My question is.. what is normal? My baby never had a pattern that I recognised, he was just always active, and now he's not.. the scans are coming back normal and I just don't know what to think.. I am constantly worried about him, I honestly feel like I'm always doing the wrong thing by both calling and not calling.

Is this normal? Do all babies change/reduce their movements towards the end of pregnancy? Is this a new pattern I should be considering or should I be concerned that he's not as active as he was a week ago (unless he's on the monitor)? His movements now are more pushes instead of kicks/jabs, sometimes I cannot differentiate between movements or braxton hicks.