Tommie Tippie Steriliser

Hey! Does anyone else have/had any issues with the TT steriliser. I find myself descaling it at least 2-3 times a week which seems a lot to me and I find the metal disk burns really easily and often I can smell a burning smell coming from the machine after a full cycle. I try my best to remeber to stop it half way through a cycle to avoid this but it’s so easy to forget especially with a little one who needs your attention. Any advise if someone experienced something similar, or any recommendations for other sterlisers that are good & don’t cost a fortune!