how bad for a leak?

So I replaced the diff fluid in my 09 grizz 450 and the rear is leaking at a few drops an hour consistently. As you can imagine, after a couple of days, you have a small puddle …

When I bought this grizz, there was no leak, because there was no fluid.

My question is – can I drive it this way if I keep topping the fluid off with a few squirts of gear oil?

Does anyone do this instead of changing the seals so often? I’ll get to it, but I want to ride also.