My rabit is losing fur continuesly and making very slow movements

How old is your rabbit? Is your rabbit male or female (I'd guess female)? Is your rabbit fixed? Do you have more than one rabbit?

This is normal for spring. Rabbits shed their winter coat in the spring.

If your rabbit is older (over 5 years) female, not spayed, and has another rabbit friend, it could be pregnancy, and she's building a nest.

I really need more info in order to know exactly what's going on.