How do I prepare for chemo side effects?

I’m 65 and I was diagnosed stage 1 TNBC on 7Jul. Was told it was 7mm. I had a lumpectomy 29July. I was to have radiation after they moved my pacemaker since my cancer is in my left breast. Final pathology came back as the mass being 1.2cm. Had a port put in 19Aug, still having pain with it. I begin chemo 28Aug of TC ( docetaxel and cytoxan) of 4 rounds every 21 days. I cut a foot off my hair last week hoping to not lose it but if I lose it, it’s just hair and will grow back (would be nice if blond and curly like my son’s). Any advice would be greatly appreciated while I go on this next part of my journey. I’m grateful it was found early but not looking forward to side effects.