Pictures would help.
New tips can be very light colored and lots of new growers think the have brunt their plants, when they just need to BTFO.
Without seeing your full regime or pictures I am going to say you will be fine dialing it back the next feed or two.
If the tips green up, you know you didn't burn em, and can probably bump the feed back up slowly.
If the tips don't green up, but don't get worse, then your probably fine dialing it back
If the tips get worse, post some pics up. But in that case you will want to do a light flush to relieve any burn.