Should I drop a subject?

I'm in Y13 studying maths, further maths, chemistry and physics. I want to go into chemical engineering for uni (UCL & Imperial are some of my choices) but my predicted grades aren't very high. So I am considering dropping physics to help manage my time but it also is hard to decide since I've already studied it for a year.
Some unis also put physics as a preferred subject so this makes me even more unsure whether this is a good decision.

Chemical engineering has a lot of physics in it so, that's something to consider. That said most chemical engineering courses don't require physics AND chemistry - usually they require maths and EITHER physics OR chemistry, or they require maths and chemistry.

I want to study Vet Med and have dropped maths for this very reason. I have however researched all the unis that offer vet med to insure maths isn’t needed. My chemistry is my weakest and am currently working at a B grade so had to sacrifice maths to spend more time on chemistry. Just make sure you do your research thoroughly first!
Btw 2 of my uncles went to Imperial to do mechanical engineering!

Thank you! I really like chemistry that’s why I wanted to keep chemistry more than physics. I do further maths and maths which I hope is enough.