My miner is level 56, and my botanist and fisher are 51. Is there an easier way to level from 50-60 fast rather than just the HW leves in Foundation? And for levels 60-70 is the SB leves in Kugane good, or something else?

From level 20 to 50, I've done leves. I thought this was the fastest, but someone said collectables. I'm not really sure.

Any help would be greatly appreciated!