My husband

So my husband has finally admitted that he likes a little anal play on him. Nothing outrageous but just like a finger or so. Drives him insane. Lol. So my question is there any advice to be able to ride him on top while giving him a little play in the other end too? I’m a much smaller girl than him. I’m about 5 feet 115 lb and he’s like 5’11” at 210. So being on top is a little hard already for me. But I’d really like to try it because I think I’d get so many moan out of him. 😉 thanks in advance..