Here's a write up of what I did, think I've remembered all the steps correctly.
MacBook to Astroberry via direct Lan connection.
1. Download astroberry, Mac unzips automatically
2. Download Balena Etcher
3. Use Disk Utility to erase and format micro sd card, use MSDOS FAT
4. Insert sd card in Pi, attach keyboard and mouse and screen, turn on Pi.
5. Open terminal in Pi, type: sudo apt update
6. Then in Pi terminal, type: sudo apt upgrade
7. Wait till upgrades download and install, then type sudo reboot
8. Plug in Lan cable.
9. On the Pi, right click the wifi icon top right, click edit connections.
10. Click on the wired option then click the cog icon to edit.
11. In the IPv4 tab, add new IP address. I used
Address: 192.168.2.2 (anything similar will do as long as it’s not in the same range as your home wifi)
Netmask: 24
Gateway: 255.255.255.0
12. On your Mac open Sharing in System Preferences. Tick Lan 10/100/1000. Tick Internet Sharing and start.
13. Open Network in System Preferences, click on the USB LAN 10/100/1000.
Configure IPv4 set to Manually
IP Address set to 192.168.2.3
Set Subnet Mask to 255.255.255.0
14. Open a browser window on your Mac, type in astroberry.local
15. In the small sidebar tab, click the telescope, tick the auto start and auto connect.
16. On your Mac launch Ekos, in the profile set it as Remote and set Host to astroberry.local, finish your profile.
17. Start up Ekos and it should connect.