waiting to send in secondary due to waiting for a DO letter bad?
So I submitted my app today, and I'm assuming the whole verification process and releasing to schools takes around a month? (someone correct me if im wrong) Currently, I'm currently shadowing a DO who said he would write me a letter but this would happen prolly towards the end of june
Is this timeline alright/will I be delayed because I will be getting that letter late? If, for some reason, I get my secondaries before I am able to get a letter from him, should I wait until the letter is completed? I've heard waiting to submit secondaries is bad (dunno exactly why? other than the usual submit everything ASAP)