Buds have no trichomes

[Babygrow]

I’m in week 8-9 of an indoor grow and need advice on whether to tough it out or start over. Have two plants in a challenging grow situation where heat has been difficult to control - many days well over 30 centigrade. It looks like I have minimal trichome production and was told high heat will both stop them forming and the plant from making them. I’ve even read high heat will evaporate what has grown. Should I let them go a couple more weeks or just trash it and start over. Weather has been a constant issue!