Postpone 8 week vaccinations

[JKDcot]

Hello all
Just after knowledgeable opinions please. 8 week old is due his first vaccinations tomorrow. I already cancelled them for last Friday as it was 30+ degrees. Was meant to be cooler this week but tomorrow is another hot day and I’m nervous he will get a fever which is hard to manage. I can’t keep him cool even without a fever despite constant feeding, no clothes and fans on.

Should I move it again? Or am I being over dramatic?

Thanks

Rather he be out of sorts and have a temperature than be seriously ill or worse with an easily preventable disease.

Had my temperature taken yesterday, I foolishly said that it would be very high as I was so hot.
I was told that external temperatures have no bearing.