Good advice above!
The answer is "yes" it will help. But that is not saying much. I recommend you start with doubling your battery capacity. It is the first step in a solar installation.
100 watts would run a 100 watt incandescent light bulb or 5 LED lights from 10 am to 2 pm. It is not going charge your house battery much.
A 95 amp hour battery may get you through the night, but it will need 10 hours of charging to get you through the next night. While charging, it will start drawing about 20 to 30 amps and slowly drop to 3 to 5 amps over 10 hours.
You need grid power or a generator to deliver 20 amps. You would need about 300 to 600 watts of solar and bright sun.
Successful solar dry camping strategies start with a large battery bank and a quiet inverter generator. Solar is the last component to add.
I would choose enough battery to get through at least 3 days, but two days may work in places with reliable sun. Run the generator for 2 to 4 hours in the early morning before sun is high in the sky. Let the solar provide the long slow finishing charge.
I recommend 200 amp hours of AGM batteries as a foundation for 3 days of dry camping. If that is enough, you are done. RV lithium batteries would be better.
Next add at least 1000 watt quiet inverter generator to power your on-board RV converter/charger and run it every three days for 5 hours continuously. Many people choose a 2000 watt inverter generator to run other 120 volt AC appliances at the same time.
Finally, if you want to avoid running the generator, install 300 to 600 watts of solar. You would still need the generator for cloudy days and shady camping spots.
There are lots of variation on successful plans, but this is the core.
I wish you good luck and happy trails ahead!