Honda crv startng to squeak again after being fixed last year?

Someone told me to lubricate the rubber mounts I replaced in the back to reduce squeaking. It squeaks over bumps and gravel road. I have noticed its silent only on rainy days.
If I do lubricate do I need to lift the car or can I just get under it and spray the lub?

You do not lubricate rubber mounts. Whoever told you that is wrong. I do not know what rubber mounts you are referring to but I can tell you they do not need lubricating. If they are squeaking then something is wrong. Either they were installed incorrectly or they are worn. You might want to let a professional repair this.