assuming you did not add anything to kill the yeast you will get slight fermentation. Probably not much but some. The main factor is where your abv was at when you added the raspeberries, if you where at a high abv then you wont get much fernemtarion just a tiny bit as you are proaching the alcohol tolerance of the yeast. I have an 8 month old mead againg and every so often i hear a bubble so there is still activity in there very little but some.
But if say your abv was a lot lower than the alcohol tolerance you will get a but more fermentation not as vigorous as some of the yeast is in the bottom and may nit be in immediatate direct contact.
At this point since you added the juice would just leave it alone and let it age maybe three more months. .if you do stir the sediment then let it age 3 months to five more just to let it settle out. but i woukd be incline not to stir and and enjoy a nice raspberry mead in a in a few more minths.
the onky reason .i say this is bc Mead can be stubborn when it comes to clearing if you wanted to clear without adding clearing agent.
i have had meads that cleared in 3 months, i have had mead that atbthe 7 month mark are still cloudy.