I finally broke down and bought a heat plate last year. The cost of it always scared me away, but it turns out that the peace of mind is priceless. I will never go back to a heat lamp.
https://smile.amazon.com/gp/product/B07DLCSHL2/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&psc=1
https://smile.amazon.com/gp/product/B07DLCSHL2/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&psc=1