Need advice on what to do?

I want to switch jobs. Currently, I need one month for preparation only post that I would be able to crack (or atleast confident in) interviews. But the thing is if start applying after this month (in June) ....m totally unavailable for anything in July. So, m kinda perplexed what if I start getting interview calls in july when m not there. So I want ur opinions to choose between the following three options.

1. start applying from next month, nd let the date decide if interview falls in July or whenever (will see them)

2. Start applying in August after free from everything, will also get proper preparation time.

3. Start applying from now itself, and keep on studying in the meantime (again let the fate do it's part) . Cuzz this way I won't be missing any opportunities ryt??