Ofc it's possible, but first review your current revision status and try to change it. Do you find one science harder than the other? Maybe it's required practicals?
Pay attention well in lessons (ik it sucks, but it saves so much time trying to understand it from scratch again and u don't need to make notes).
Gradually build your science practice and keep it consistent during non-exam period (by doing Kuizical randomly to check your knowledge and doing the Cognito lessons to learn the content you don't know yet before just diving into exam practice).
Then for revision resources, try Cognito and PMT together (I'm in Year 10 too doing triple science, and these are the main if not the only resources I use, and I got Grade 7 in all the science mocks and I just do Cognito regularly (its fun ig) and I only properly do past papers a few days before the assessment day lol on PMT after watching the 1 hour long entire science videos on YouTube - so ig it's more about consistency and regular practice to brush up on your knowledge than doing all the websites in the world, as GCSE Triple Science is pretty repetitive and u can learn how the examiners want u to answer by tailoring to the mark schemes).
Finally, ask your teachers for help on your situation before the summer holidays start and they'll guide u onto what u should do next.
-Trust me, all you have to do to get Grade 6 is to understand the content well, so if u don't get a question right then watch a Cognito or Freesciencelessons video on the topic, and use the keywords in exam questions that the examiners want in your answer (they're quite picky on this, particularly on the 6-mark questions).
A final tip would be to do the Cognito lesson before your science lesson that day if u know what topic in the chapter you'll be learning that day (only takes 5 mins while eating breakfast lol) - saves u from walking in totally unprepared and you can focus on writing notes and exam practice in the lesson instead!
Hopefully this was helpful, ik my writing was everywhere but if u need anymore help just ask! You can totally do this 🙂
Btw, what exam board are you doing? I'm doing AQA