Old-Biscuit wrote:
Absorption fridges need to be reasonably level to function properly.
Off level operation will disrupt the gravity flow of coolant which will cause overheating of coolant which will cause the anti-rust inhibitor to crystallize and plate out on inside of cooling tubes. It is accumulative and permanent damage.
Absorption fridges require time to initially cool down. Freezer cools down first then food section.
Agree with all of the above. The OP didn't say whether it was a new or used unit, but if the latter, older fridges require more time to cool down than if they are new, and if the TT has been used off level in the past this also lowers the efficiency of your fridge - permanently.
Like others have said, we also start up the fridge a day or two before, and any food or beverages we put in are already pre-chilled. Extremely hot climates (deep South, Southwest) are a challenge to RV refrigerators.
And finally, try to limit how often and for how long the fridge door is open. One RV tech I know tells his customers that for every one minute the door is open, the fridge requires an hour to re-establish the temperature. Good luck!