I bring those big dish bowels and wash them that way. Than I just lay a towel on the nightstand and leave the bottles drying after cleaning
https://www.amazon.com/GIMWA-Collapsible-Wash-Basin-Drain/dp/B0CRVV9HVG/ref=mp_s_a_1_1_sspa?crid=1KB933EJU48CP&dib=eyJ2IjoiMSJ9.qXkdWxspqMdfDSAdj5W9wsWXRXw4rnGbfUMCFwnj_kkm06DELSNVmXLRFrVVIDZrhqCnzO2Gp3bl67XZCbEuEL6rXY23halx2K77DLnL5-MEFxZjKmKPyKk5wzZmbEiDGawM2Weq2rG1ifxfDB4gOBLbiHSVxvTlIXovC-O4Y7g8jAzgiJJehCA4JOLq1WEp285pfkbt8nvvveQKS1am1Q.UBwzbI5f8_h634MgtV1MmD6O0QmTDH2JDVdXsCyJerA&dib_tag=se&keywords=collapsible+dish+tub&qid=1729247756&sprefix=collapsible+dish+%2Caps%2C101&sr=8-1-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9waG9uZV9zZWFyY2hfYXRm&psc=1
I take a washing up bowl, fill it in the sink and use that to wash the bottles, then cold water sterilse x