Decreasing THC levels

Since being on prescription about 18 months I've mostly had 25% THC and above, had a few 18-22 but more 20-24% recently. Thinking about balanced strains and more lower THC strains but I don't want to take the risk of getting something that doesn't work.

Do strains like equiposa, moon berry, sudz do anything for people?

Any other recommendations around 20% or less? I'm happy with medical but getting bored of the brown coloured muted stuff compared to BM. I've only ever had £80+ strains but finding the need to get a little BM side bag which smells tastes and looks better, and effects last longer

I need the lower THC for the day as will keep the heavy for night time as sleep is an issue