Harvesting elephant garlic

After some advice. First time growing garlic and sowed elephant garlic last year. I just dug one up to check if now is the right time for harvesting. I’ve read about bottom leaves going brown but the plants haven’t looked that healthy for quite a while!

Does this look ready to go? Am I too early or too late!?

Very close but no quite. I base it on the leaves looking a bit browner.